THE WHITE STAR LINE.
The Titanic was one of a fleet of 13 ships employed in the transport
of passengers, mails, and cargo between Great Britain and the United
States, the usual ports of call for the service in which she was engaged
being Southampton, Cherbourg, Plymouth, Queenstown, and New York.
The owners are the Oceanic Steam Navigation Co. (Ltd.), usually known as
the White Star Line, a British registered company, with a capital of
£750,000, all paid up, the directors being Mr. J. Bruce Ismay
(chairman), the Right Hon. Lord Pirrie, and Mr. H. A. Sanderson.
The company are owners of 29 steamers and tenders; they have a large
interest in 13 other steamers, and also own a training sailing ship for
officers.
All the shares of the company, with the exception of eight held by
Messrs. E. C. Grenfell, Vivian H. Smith, W. S. M. Burns, James Gray, J.
Bruce Ismay, H. A. Sanderson, A. Kerr, and the Right Hon. Lord Pirrie,
have, since the year 1902, been held by the International Navigation Co.
(Ltd.), of Liverpool, a British registered company, with a capital of
£700,000, of which all is paid up, the directors being Mr. J. Bruce
Ismay (chairman), and Messrs. H. A. Sanderson, Charles F. Torrey, and H.
Concannon.
The debentures of the company, £1,250,000, are held mainly, if not
entirely, in the United Kingdom by the general public.
The International Navigation Co. (Ltd.), of Liverpool, in addition to
holding the above-mentioned shares of the Oceanic Steam Navigation Co.
(Ltd.), is also the owner of—
1. Practically the whole of the issued share capital of the British &
North Atlantic Steam Navigation Co. (Ltd.), and the Mississippi &
Dominion Steamship Co. (Ltd.), (the Dominion Line).
2. Practically the whole of the issued share capital of the Atlantic
Transport Co. (Ltd), (the Atlantic Transport Line).
3. Practically the whole of the issued ordinary share capital and about
one-half of the preference share capital of Frederick Leyland & Co.
(Ltd.), (the Leyland Line).
As against the above-mentioned shares and other property, the
International Navigation Co. (Ltd.) have issued share lien certificates
for £25,000,000.
Both the shares and share lien certificates of the International
Navigation Co. (Ltd.) are now held by the International Mercantile
Marine Co. of New Jersey, or by trustees for the holders of its
debenture bonds.
THE STEAMSHIP "TITANIC."
The Titanic was a three-screw vessel of 46,328 tons gross and 21,831
net register tons, built by Messrs. Harland & Wolff for the White Star
Line service between Southampton and New York. She was registered as a
British steamship at the port of Liverpool, her official number being
131,428. Her registered dimensions were—
| Feet |
| Length | 852.50 |
| Breadth | 92.50 |
Depth from top of keel to top of beam at lowest point of sheer of C deck,
the highest deck which extends continuously from bow to stern | 64.75 |
| Depth of hold | 59.58 |
| Height from B to C deck | 9.00 |
| Height from A to B deck | 9.00 |
| Height from boat to A deck | 9.50 |
| Height from boat deck to water line amidships at time of accident, about | 60.50 |
| Displacement at 34 feet 7 inches is | tons | 52,310 |
The propelling machinery consisted of two sets of four-cylinder
reciprocating engines, each driving a wing propeller, and a turbine
driving the center propeller. The registered horsepower of the
propelling machinery was 50,000. The power which would probably have
been developed was at least 55,000.
Structural arrangements.—The structural arrangements of the Titanic
consisted primarily of—
(1) An outer shell of steel plating, giving form to the ship up to the
top decks.
(2) Steel decks.—These were enumerated as follows:
| |
Height
to next
deck
above. |
Distance from
34 feet 7 inches water
line amidships. |
| |
|
Above. |
Below. |
| |
Ft. in. |
Ft. in. |
Ft. in. |
| Boat deck, length about 500 feet | | 58 0 | |
| A deck, length about 500 feet | 9 6 | 48 6 | |
| B deck, length about 550 feet, with 125 feet forecastle and 105 feet poop | 9 0 | 39 6 | |
| C deck, whole length of ship | 9 0 | 30 6 | |
| D deck, whole length of ship | 10 6 | 20 0 | |
| |
|
(Tapered
down at
ends.) |
|
| E deck, whole length of ship | 9 0 | 11 0 | |
| F deck, whole length of ship | 8 6 | 2 6 | |
| G deck, 190 feet forward of boilers, 210 feet aft of machinery | 8 0 | | 5 6 |
| Orlop deck, 190 feet forward of boilers, 210 feet aft of machinery | 8 0 | | 13 6 |
C, D, E, and F were continuous from end to end of the ship. The decks
above these were continuous for the greater part of the ship, extending
from amidships both forward and aft. The boat deck and A deck each had
two expansion joints, which broke the strength continuity. The decks
below were continuous outside the boiler and engine rooms and extended
to the ends of the ship. Except in small patches none of these decks was
water-tight in the steel parts, except the weather deck and the orlop
deck aft.
(3) Transverse vertical bulkheads.—There were 15 transverse
water-tight bulkheads, by which the ship was divided in the direction of
her length into 16 separate compartments. These bulkheads are referred
to as "A" to "P," commencing forward.
The water-tightness of the bulkheads extended up to one or other of the
decks D or E; the bulkhead A extended to C, but was only water-tight to
D deck. The position of the D, E, and F decks, which were the only ones
to which the water-tight bulkheads extended, was in relation to the
water line (34 feet 7 inches draft) approximately as follows:
| |
Height above water line
(34 feet 7 inches). |
| |
Lowest
part
amid-
ships. |
At bow. |
At stern. |
| |
Ft. in. |
Ft. in. |
Ft. in. |
| D |
20 0 |
33 0 |
25 0 |
| E |
11 0 |
24 0 |
16 0 |
| F |
2 6 |
15 6 |
7 6 |
These were the three of the four decks which, as already stated, were
continuous all fore and aft. The other decks, G and orlop, which
extended only along a part of the ship, were spaced about 8 feet apart.
The G deck forward was about 7 feet 6 inches above the water line at the
bow and about level with the water line at bulkhead D, which was at the
fore end of boilers. The G deck aft and the orlop deck at both ends of
the vessel were below the water line. The orlop deck abaft of the
turbine engine room and forward of the collision bulkhead was
water-tight. Elsewhere, except in very small patches, the decks were not
water-tight. All the decks had large openings or hatchways in them in
each compartment, so that water could rise freely through them.
There was also a water-tight inner bottom, or tank top, about 5 feet
above the top of the keel, which extended for the full breadth of the
vessel from bulkhead A to 20 feet before bulkhead P, i.e., for the whole
length of the vessel except a small distance at each end. The transverse
water-tight divisions of this double bottom practically coincided with
the water-tight transverse bulkheads; there was an additional
water-tight division under the middle of the reciprocating engine-room
compartment (between bulkheads K and L). There were three longitudinal
water-tight divisions in the double bottom, one at the center of the
ship, extending for about 670 feet, and one on each side, extending for
447 feet.
All the transverse bulkheads were carried up water-tight to at least the
height of the E deck. Bulkheads A and B, and all bulkheads from K (90
feet abaft amidships) to P, both inclusive, further extended water-tight
up to the underside of D deck. A bulkhead further extended to C deck,
but it was water-tight only to D deck.
Bulkheads A and B forward, and P aft, had no openings in them. All the
other bulkheads had openings in them, which were fitted with water-tight
doors. Bulkheads D to O, both inclusive, had each a vertical sliding
water-tight door at the level of the floor of the engine and boiler
rooms for the use of the engineers and firemen. On the Orlop deck there
was one door, on bulkhead N, for access to the refrigerator rooms. On G
deck there were no water-tight doors in the bulkheads. On both the F and
E decks nearly all the bulkheads had water-tight doors, mainly for
giving communication between the different blocks of passenger
accommodation. All the doors, except those in the engine-rooms and
boiler rooms, were horizontal sliding doors workable by hand, both at
the door and at the deck above.
There were 12 vertical sliding water-tight doors which completed the
water-tightness of bulkheads D to O, inclusive, in the boiler and engine
rooms. Those were capable of being simultaneously closed from the
bridge. The operation of closing was intended to be preceded by the
ringing from the bridge of a warning bell.
These doors were closed by the bringing into operation of an electric
current and could not be opened until this current was cut off from the
bridge. When this was done the doors could only be opened by a
mechanical operation manually worked separately at each door. They
could, however, be individually lowered again by operating a lever at
the door. In addition, they would be automatically closed, if open,
should water enter the compartment. This operation was done in each case
by means of a float, actuated by the water, which was in either of the
compartments which happened to be in the process of being flooded.
There were no sluice valves or means of letting water from one
compartment to another.
DETAILED DESCRIPTION.
The following is a more detailed description of the vessel, her
passenger and crew accommodation, and her machinery.
WATER-TIGHT COMPARTMENTS.
The following table shows the decks to which the bulkheads extended, and
the number of doors in them:
Bulkhead
letter. |
Extends
up to
under-
side of
deck. |
Engine
and boiler
spaces (all
controlled
from
bridge). |
Orlop to
G deck. |
F to E
deck. |
E to D
deck. |
| A | C | ... | ... | ... | ... |
| B | D | ... | ... | ... | ... |
| C | E | ... | ... | 1 | ... |
| D | E | [1]1 | ... | 1 | ... |
| E | E | [2]1 | ... | ... | ... |
| F | E | [2]1 | ... | 2 | ... |
| G | E | [2]1 | ... | ... | ... |
| H | E | [2]1 | ... | 2 | ... |
| J | E | [2]1 | ... | 2 | ... |
| K | D | 1 | ... | ... | 2 |
| L | D | 1 | ... | ... | 2 |
| M | D | 1 | ... | 1 | 2 |
| N | D | 1 | 1 | 1 | 2 |
| O | D | 1 | ... | ... | 1 |
| P | D | ... | ... | ... | ... |
The following table shows the actual contents of each separate
water-tight compartment. The compartments are shown in the left column,
the contents of each compartment being read off horizontally. The
contents of each water-tight compartment is separately given in the deck
space in which it is:
Water-tight
compartment |
Length
of each
water-tight
compartment
in fore
and aft
direction. |
Hold. |
Orlop
to G
deck. |
G to F
deck. |
F to E
deck. |
E to D
deck. |
| |
Feet. |
|
|
|
|
|
| Bow to A | 46 |
Forepeak
tank (not
used
excepting
for
trimming
ship).
| Forepeak
storeroom.
| Forepeak
storeroom.
| Forepeak
storeroom.
| Forepeak
storeroom. |
| A-B | 45 |
Cargo. |
Cargo. |
Living
spaces for
firemen,
etc. |
Living
spaces for
firemen.
|
Living
spaces for
firemen.
|
| B-C | 51 |
do |
do |
Third-class
passenger
accommo-
dation. |
Third-class
passenger
accommo-
dation.
|
Third-class
passenger
and seamen's
spaces. |
| C-D | 51 |
Alternati-
vely coal
and cargo.
|
Luggage
and
mails.
|
Baggage,
squash
rackets, &
third-class
passengers.
|
do |
Third-class
passenger
accommo-
dation. |
| D-E | 54 |
No. 6
boiler
room.
|
No. 6
boiler
room.
|
Coal and
boiler
casing.
|
do |
First-class
passenger
accommo-
dation. |
| E-F | 57 |
No. 5
boiler
room.
|
No. 5
boiler
room.
|
Coal bunker
and boiler
casing and
swimming
bath.
|
Linen rooms
and
swimming
bath.
|
Do. |
| F-G | 57 |
No. 4
boiler room. |
No. 4
boiler room. |
Coal bunker
and boiler
casing.
|
Steward's,
Turkish
baths, etc.
|
First-class
and
stewards. |
| G-H | 57 |
No. 3
boiler room. |
No. 3
boiler room. |
do. |
Third-class
saloon. |
First and
second
class and
stewards. |
| H-J | 60 |
No. 2
boiler room. |
No. 2
boiler room. |
do. |
do. |
First class. |
| J-K | 35 |
No. 1
boiler room. |
No. 1
boiler room. |
do. |
Third-class
galley,
stewards,
etc.
|
First class
and
stewards. |
| K-L | 69 |
Reciprocat-
ing-engine
room.
|
Reciprocat-
ing-engine
room.
|
Reciprocat-
ing-engine
room casing,
workshop and
engineers'
stores.
|
Engineers'
and recipro-
cating-
engine
casing.
|
First class
and
engineers'
mess, etc.
|
| L-M | 57 |
Turbine-
engine room. |
Turbine-
engine room. |
Turbine-
engine room
casing and
small
stewards'
stores.
|
Second-class
and turbine-
engine room
casing.
|
Second class
and stewards
etc. |
| M-N | 63 |
Electric-
engine room. |
Provisions
and electric
engine
casing.
|
Provisions. |
Second class |
Second and
third class. |
| N-O | 54 |
Tunnel |
Refrigerated
cargo. |
Third class |
do |
Do. |
| O-P | 57 |
do |
Cargo |
do |
Third class |
Third class. |
P to
stern | |
Afterpeak
tank for
trimming
ship.
|
Afterpeak
tank for
trimming
ship.
|
Stores |
Stores |
Stores. |
The vessel was constructed under survey of the British Board of Trade
for a passenger certificate, and also to comply with the American
immigration laws.
Steam was supplied from six entirely independent groups of boilers in
six separate water-tight compartments. The after boiler room No. 1
contained five single-ended boilers. Four other boiler rooms, Nos. 2, 3,
4, and 5, each contained five double-ended boilers. The forward boiler
room, No. 6, contained four double-ended boilers. The reciprocating
engines and most of the auxiliary machinery were in a seventh separate
water-tight compartment aft of the boilers; the low-pressure turbine,
the main condensers, and the thrust blocks of the reciprocating engine
were in an eighth separate water-tight compartment. The main electrical
machinery was in a ninth separate water-tight compartment immediately
abaft the turbine engine room. Two emergency steam-driven dynamos were
placed on the D deck, 21 feet above the level of the load water line.
These dynamos were arranged to take their supply of steam from any of
the three of the boiler rooms Nos. 2, 3, and 5, and were intended to be
available in the event of the main dynamo room being flooded.
The ship was equipped with the following:
(1) Wireless telegraphy.
(2) Submarine signaling.
(3) Electric lights and power systems.
(4) Telephones for communication between the different working positions
in the vessel. In addition to the telephones, the means of communication
included engine and docking telegraphs, and duplicate or emergency
engine-room telegraph, to be used in the event of any accident to the
ordinary telegraph.
(5) Three electric elevators for taking passengers in the first class up
to A deck, immediately below the boat deck, and one in the second class
for taking passengers up to the boat deck.
(6) Four electrically driven boat winches on the boat deck for hauling
up the boats.
(7) Life-saving appliances to the requirements of the board of trade,
including boats and life belts.
(8) Steam whistles on the two foremost funnels, worked on the
Willett-Bruce system of automatic control.
(9) Navigation appliances, including Kelvin's patent sounding machines
for finding the depth of water under the ship without stopping; Walker's
taffrail log for determining the speed of the ship; and flash signal
lamps fitted above the shelters at each of the navigating bridge for
Morse signaling with other ships.
DECKS AND ACCOMMODATION.
The boat deck was an uncovered deck, on which the boats were placed. At
its lowest point it was about 92 feet 6 inches above the keel. The
overall length of this deck was about 500 feet. The forward end of it
was fitted to serve as the navigating bridge of the vessel and was 190
feet from the bow. On the after end of the bridge was a wheel house,
containing the steering wheel and a steering compass. The chart room was
immediately abaft this. On the starboard side of the wheel house and
funnel casing were the navigating room, the captain's quarters, and some
officers' quarters. On the port side were the remainder of the officers'
quarters. At the middle line abaft the forward funnel casing were the
wireless-telegraphy rooms and the operators' quarters. The top of the
officers' house formed a short deck. The connections from the Marconi
aerials were made on this deck, and two of the collapsible boats were
placed on it. Aft of the officers' house were the first-class
passengers' entrance and stairways and other adjuncts to the passengers'
accommodation below. These stairways had a minimum effective width of 8
feet. They had assembling landings at the level of each deck, and three
elevators communicating from E to A decks, but not to the boat deck,
immediately on the fore side of the stairway.
All the boats except two Engelhardt life rafts were carried on this
deck. There were seven lifeboats on each side, 30 feet long, 9 feet
wide. There was an emergency cutter, 25 feet long, on each side at the
fore end of the deck. Abreast of each cutter was an Engelhardt life
raft. One similar raft was carried on the top of the officers' house on
each side. In all there were 14 lifeboats, 2 cutters, and 4 Engelhardt
life rafts.
The forward group of four boats and one Engelhardt raft were placed on
each side of the deck alongside the officers' quarters and the
first-class entrance. Further aft at the middle line on this deck was
the special platform for the standard compass. At the after end of this
deck was an entrance house for second-class passengers with a stairway
and elevator leading directly down to F deck. There were two vertical
iron ladders at the after end of this deck leading to A deck for the use
of the crew. Alongside and immediately forward of the second-class
entrance was the after group of lifeboats, four on each side of the
ship.
In addition to the main stairways mentioned there was a ladder on each
side amidships giving access from the A deck below. At the forward end
of the boat deck there was on each side a ladder leading up from A deck
with a landing there, from which by a ladder access to B deck could be
obtained direct. Between the reciprocating engine casing and the third
funnel casing there was a stewards' stairway, which communicated with
all the decks below as far as E deck. Outside the deck houses was
promenading space for first-class passengers.
A deck.—The next deck below the boat deck was A deck. It extended
over a length of about 500 feet. On this deck was a long house extending
nearly the whole length of the deck. It was of irregular shape, varying
in width from 24 feet to 72 feet. At the forward end it contained 34
staterooms and abaft these a number of public rooms, etc., for
first-class passengers, including two first-class entrances and
stairway, reading room, lounge, and the smoke room. Outside the deck
house was a promenade for first-class passengers. The forward end of it
on both sides of the ship, below the forward group of boats and for a
short distance farther aft, was protected against the weather by a steel
screen, 192 feet long, with large windows in it. In addition to the
stairway described on the boat deck, there was near the after end of the
A deck and immediately forward of the first-class smoke room another
first-class entrance, giving access as far down as C deck. The
second-class stairway at the after end of this deck (already described
under the boat deck) had no exit on to the A deck. The stewards'
staircase opened onto this deck.
B deck.—The next lowest deck was B deck, which constituted the top
deck of the strong structure of the vessel, the decks above and the side
plating between them being light plating. This deck extended
continuously for 550 feet. There were breaks or wells both forward and
aft of it, each about 50 feet long. It was terminated by a poop and
forecastle. On this deck were placed the principal staterooms of the
vessel, 97 in number, having berths for 198 passengers, and aft of these
was the first-class stairway and reception room, as well as the
restaurant for first-class passengers and its pantry and galley.
Immediately aft of this restaurant were the second-class stairway and
smoke room. At the forward end of the deck outside the house was an
assembling area, giving access by the ladders, previously mentioned,
leading directly to the boat deck. From this same space a ladderway led
to the forward third-class promenade on C deck. At the after end of it
were two ladders giving access to the after third-class promenade on C
deck. At the after end of this deck, at the middle line, was placed
another second-class stairway, which gave access to C, D, E, F, and G
decks.
At the forward end of the vessel, on the level of the B deck, was
situated the forecastle deck, which was 125 feet long. On it were
placed the gear for working the anchors and cables and for warping (or
moving) the ship in dock. At the after end, on the same level, was the
poop deck, about 105 feet long, which carried the after-warping
appliances and was a third-class promenading space. Arranged above the
poop was a light docking bridge, with telephone, telegraphs, etc.,
communicating to the main navigating bridge forward.
C deck.—The next lowest deck was C deck. This was the highest deck
which extended continuously from bow to stern. At the forward end of it,
under the forecastle, was placed the machinery required for working the
anchors and cables and for the warping of the ship referred to on B deck
above. There were also the crew's galley and the seamen's and firemen's
mess-room accommodation, where their meals were taken. At the after end
of the forecastle, at each side of the ship, were the entrances to the
third-class spaces below. On the port side, at the extreme after end and
opening onto the deck, was the lamp room. The break in B deck between
the forecastle and the first-class passenger quarters formed a well
about 50 feet in length, which enabled the space under it on C deck to
be used as a third-class promenade. This space contained two hatchways,
the No. 2 hatch, and the bunker hatch. The latter of these hatchways
gave access to the space allotted to the first and second class baggage
hold, the mails, specie and parcel room, and to the lower hold, which
was used for cargo or coals. Abaft of this well there was a house 450
feet long and extending for the full breadth of the ship. It contained
148 staterooms for first class, besides service rooms of various kinds.
On this deck, at the forward first-class entrance, were the purser's
office and the inquiry office, where passengers' telegrams were received
for sending by the Marconi apparatus. Exit doors through the ship's side
were fitted abreast of this entrance. Abaft the after end of this long
house was a promenade at the ship's side for second-class passengers,
sheltered by bulwarks and bulkheads. In the middle of the promenade
stood the second-class library. The two second-class stairways were at
the ends of the library, so that from the promenade access was obtained
at each end to a second-class main stairway. There was also access by a
door from this space into each of the alleyways in the first-class
accommodation on each side of the ship and by two doors at the after end
into the after well. This after well was about 50 feet in length and
contained two hatchways called No. 5 and No. 6 hatches. Abaft this well,
under the poop, was the main third-class entrance for the after end of
the vessel leading directly down to G deck, with landings and access at
each deck. The effective width of this stairway was 16 feet to E deck.
From E to F it was 8 feet wide. Aft of this entrance on B deck were the
third-class smoke room and the general room. Between these rooms and the
stern was the steam steering gear and the machinery for working the
after-capstan gear, which was used for warping the after end of the
vessel. The steam steering gear had three cylinders. The engines were in
duplicate to provide for the possibility of breakdown of one set.
D deck.—The general height from D deck to C deck was 10 feet 6
inches, this being reduced to 9 feet at the forward end, and 9 feet 6
inches at the after end, the taper being obtained gradually by
increasing the sheer of the D deck. The forward end of this deck
provided accommodation for 108 firemen, who were in two separate
watches. There was the necessary lavatory accommodation, abaft the
firemen's quarters at the sides of the ship. On each side of the middle
line immediately abaft the firemen's quarters there was a vertical
spiral staircase leading to the forward end of a tunnel, immediately
above the tank top, which extended from the foot of the staircase to the
forward stokehole, so that the firemen could pass direct to their work
without going through any passenger accommodation or over any passenger
decks. On D deck abaft of this staircase was the third class promenade
space which was covered in by C deck. From this promenade space there
were 4 separate ladderways with 2 ladders, 4 feet wide to each. One
ladderway on each side forward led to C deck, and one, the starboard,
led to E deck and continued to F deck as a double ladder and to G deck
as a single ladder. The two ladderways at the after end led to E deck on
both sides and to F deck on the port side. Abaft this promenade space
came a block of 50 first-class staterooms. This surrounded the forward
funnel. The main first-class reception room and dining saloon were aft
of these rooms and surrounded the No. 2 funnel. The reception room and
staircase occupied 83 feet of the length of the ship. The dining saloon
occupied 112 feet, and was between the second and third funnels. Abaft
this came the first-class pantry, which occupied 56 feet of the length
of the ship. The reciprocating engine hatch came up through this pantry.
Aft of the first-class pantry, the galley, which provides for both first
and second class passengers, occupied 45 feet of the length of the ship.
Aft of this were the turbine engine hatch and the emergency dynamos.
Abaft of and on the port side of this hatch were the second-class pantry
and other spaces used for the saloon service of the passengers. On the
starboard side abreast of these there was a series of rooms used for
hospitals and their attendants. These spaces occupied about 54 feet of
the length. Aft of these was the second-class saloon occupying 70 feet
of the length. In the next 88 feet of length there were 38 second-class
rooms and the necessary baths and lavatories. From here to the stern was
accommodation for third-class passengers and the main third-class
lavatories for the passengers in the after end of the ship. The
water-tight bulkheads come up to this deck throughout the length from
the stern as far forward as the bulkhead dividing the after boiler room
from the reciprocating engine room. The water-tight bulkhead of the two
compartments abaft the stem was carried up to this deck.
E deck.—The water-tight bulkheads, other than those mentioned as
extending to D deck, all stopped at this deck. At the forward end was
provided accommodation for three watches of trimmers, in three separate
compartments, each holding 24 trimmers. Abaft this, on the port side,
was accommodation for 44 seamen. Aft of this, and also on the starboard
side of it, were the lavatories for crew and third-class passengers;
further aft again came the forward third-class lavatories. Immediately
aft of this was a passageway right across the ship communicating
directly with the ladderways leading to the decks above and below and
gangway doors in the ship's side. This passage was 9 feet wide at the
sides and 15 feet at the center of the ship.
From the after end of this cross passage main alleyways on each side of
the ship ran right through to the after end of the vessel. That on the
port side was about 8-1/2 feet wide. It was the general communication
passage for the crew and third-class passengers and was known as the
working passage. In this passage at the center line in the middle of the
length of the ship direct access was obtained to the third-class dining
rooms on the deck below by means of a ladderway 20 feet wide. Between
the working passage and the ship's side was the accommodation for the
petty officers, most of the stewards, and the engineers' mess room. This
accommodation extended for 475 feet. From this passage access was
obtained to both engine rooms and the engineers' accommodation, some
third-class lavatories and also some third-class accommodation at the
after end. There was another cross passage at the end of this
accommodation about 9 feet wide, terminating in gangway doors on each
side of the ship. The port side of it was for third-class passengers and
the starboard for second class. A door divided the parts, but it could
be opened for any useful purpose, or for an emergency. The second-class
stairway leading to the boat deck was in the cross passageway.
The passage on the starboard side ran through the first and then the
second-class accommodation, and the forward main first-class stairway
and elevators extended to this deck, whilst both the second-class main
stairways were also in communication with this starboard passage. There
were 4 first-class, 8 first or second alternatively, and 19 second-class
rooms leading off this starboard passage.
The remainder of the deck was appropriated to third-class accommodation.
This contained the bulk of the third-class accommodation. At the forward
end of it was the accommodation for 53 firemen constituting the third
watch. Aft of this in three water-tight compartments there was
third-class accommodation extending to 147 feet. In the next water-tight
compartment were the swimming bath and linen rooms. In the next
water-tight compartments were stewards' accommodation on the port side,
and the Turkish baths on the starboard side. The next two water-tight
compartments each contained a third-class dining room.
The third-class stewards' accommodation, together with the third-class
galley and pantries, filled the water-tight compartment. The engineers'
accommodation was in the next compartment directly alongside the casing
of the reciprocating engine room. The next 3 compartments were allotted
to 64 second-class staterooms. These communicated direct with the
second-class main stairways. The after compartments contained
third-class accommodation. All spaces on this deck had direct ladderway
communication with the deck above, so that if it became necessary to
close the water-tight doors in the bulkheads an escape was available in
all cases. On this deck in the way of the boiler rooms were placed the
electrically driven fans which provided ventilation to the stokeholes.
G deck.—The forward end of this deck had accommodation for 15 leading
firemen and 30 greasers. The next water-tight compartment contained
third-class accommodation in 26 rooms for 106 people. The next
water-tight compartment contained the first-class baggage room, the
post-office accommodation, a racquet court, and 7 third-class rooms for
34 passengers. From this point to the after end of the boiler room the
space was used for the 'tween deck bunkers. Alongside the reciprocating
engine room were the engineers' stores and workshop. Abreast of the
turbine engine room were some of the ship's stores. In the next
water-tight compartment abaft the turbine room were the main body of the
stores. The next two compartments were appropriated to 186 third-class
passengers in 60 rooms; this deck was the lowest on which any passengers
or crew were carried.
Below G deck were two partial decks, the orlop and lower orlop decks,
the latter extending only through the fore peak and No. 1 hold; on the
former deck, abaft the turbine engine room, were some storerooms
containing stores for ship's use.
Below these decks again came the inner bottom, extending fore-and-aft
through about nine-tenths of the vessel's length, and on this were
placed the boilers, main and auxiliary machinery, and the electric-light
machines. In the remaining spaces below G deck were cargo holds or
'tween decks, seven in all, six forward and one aft. The firemen's
passage, giving direct access from their accommodation to the forward
boiler room by stairs at the forward end, contained the various pipes
and valves connected with the pumping arrangements at the forward end of
the ship, and also the steam pipes conveying steam to the windlass gear
forward and exhaust steam pipes leading from winches and other deck
machinery. It was made thoroughly water-tight throughout its length, and
at its after end was closed by a water-tight vertical sliding door of
the same character as other doors on the inner bottom. Special
arrangements were made for pumping this space out, if necessary. The
pipes were placed in this tunnel to protect them from possible damage by
coal or cargo, and also to facilitate access to them.
On the decks was provided generally, in the manner above described,
accommodation for a maximum number of 1,034 first-class passengers, and
at the same time 510 second-class passengers and 1,022 third-class
passengers. Some of the accommodation was of an alternative character
and could be used for either of two classes of passengers. In the
statement of figures the higher alternative class has been reckoned.
This makes a total accommodation for 2,566 passengers.
Accommodation was provided for the crew as follows: About 75 of the deck
department, including officers and doctors, 326 of the engine-room
department, including engineers, and 544 of the victualing department,
including pursers and leading stewards.
Access of passengers to the boat deck.—The following routes led
directly from the various parts of the first-class passenger
accommodation to the boat deck: From the forward ends of A, B, C, D, and
E decks by the staircase in the forward first-class entrance direct to
the boat deck. The elevators led from the same decks as far as A deck,
where further access was obtained by going up the top flight of the main
staircase.
The same route was available for first-class passengers forward of
midships on B, C, and E decks.
First-class passengers abaft midships on B and C decks could use the
staircase in the after main entrance to A deck, and then could pass out
onto the deck and by the midships stairs beside the house ascend to the
boat deck. They could also use the stewards' staircase between the
reciprocating-engine casing and Nos. 1 and 2 boiler casing, which led
direct to the boat deck. This last route was also available for
passengers on E deck in the same divisions who could use the forward
first-class main stairway and elevators.
Second-class passengers on D deck could use their own after stairway to
B deck and could then pass up their forward stairway to the boat deck,
or else could cross their saloon and use the same stairway throughout.
Of the second-class passengers on E deck, those abreast of the
reciprocating-engine casing, unless the water-tight door immediately
abaft of them was closed, went aft and joined the other second-class
passengers. If, however, the water-tight door at the end of their
compartment was closed, they passed through an emergency door into the
engine room and directly up to the boat deck by the ladders and gratings
in the engine-room casing.
The second-class passengers on E deck in the compartment abreast the
turbine casing on the starboard side, and also those on F deck on both
sides below could pass through M water-tight bulkhead to the forward
second-class main stairway. If this door were closed, they could pass by
the stairway up to the serving space at the forward end of the
second-class saloon and go into the saloon and thence up the forward
second-class stairway.
Passengers between M and N bulkheads on both E and F decks could pass
directly up to the forward second-class stairway to the boat deck.
Passengers between N and O bulkheads on D, E, F, and G decks could pass
by the after second-class stairway to B deck and then cross to the
forward second-class stairway and go up to the boat deck.
Third-class passengers at the fore end of the vessel could pass by the
staircases to C deck in the forward well and by ladders on the port and
starboard sides at the forward end of the deck houses, thence direct to
the boat deck outside the officers' accommodation. They might also pass
along the working passage on E deck and through the emergency door to
the forward first-class main stairway, or through the door on the same
deck at the forward end of the first-class alleyway and up the
first-class stairway direct to the boat deck.
The third-class passengers at the after end of the ship passed up their
stairway to E deck and into the working passage and through the
emergency doors to the two second-class stairways and so to the boat
deck, like second-class passengers. Or, alternatively, they could
continue up their own stairs and entrance to C deck, thence by the two
ladders at the after end of the bridge onto the B deck and thence by the
forward second-class stairway direct to the boat deck.
Crew.—From each boiler room an escape or emergency ladder was
provided direct to the boat deck by the fidleys, in the boiler casings,
and also into the working passage on E deck, and thence by the stair
immediately forward of the reciprocating-engine casing, direct to the
boat deck.
From both the engine rooms ladders and gratings gave direct access to
the boat deck.
From the electric engine room, the after tunnels, and the forward pipe
tunnels escapes were provided direct to the working passage on E deck
and thence by one of the several routes already detailed from that
space.
From the crew's quarters they could go forward by their own staircases
into the forward well and thence, like the third-class passengers, to
the boat deck.
The stewards' accommodation being all connected to the working passage
or the forward main first-class stairway, they could use one of the
routes from thence.
The engineers' accommodation also communicated with the working passage,
but as it was possible for them to be shut between two water-tight
bulkheads, they had also a direct route by the gratings in the
engine-room casing to the boat deck.
On all the principal accommodation decks the alleyways and stairways
provided a ready means of access to the boat deck, and there were clear
deck spaces in way of all first, second, and third class main entrances
and stairways on boat deck and all decks below.
STRUCTURE.
The vessel was built throughout of steel and had a cellular double
bottom of the usual type, with a floor at every frame, its depth at the
center line being 63 inches, except in way of the reciprocating
machinery, where it was 78 inches. For about half of the length of the
vessel this double bottom extended up the ship's side to a height of 7
feet above the keel. Forward and aft of the machinery space the
protection of the inner bottom extended to a less height above the keel.
It was so divided that there were four separate water-tight compartments
in the breadth of the vessel. Before and abaft the machinery space there
was a water-tight division at the center line only, except in the
foremost and aftermost tanks. Above the double bottom the vessel was
constructed of the usual transverse frame system, reenforced by web
frames, which extended to the highest decks.
At the forward end the framing and plating was strengthened with a view
to preventing panting and damage when meeting thin harbor ice.
Beams were fitted on every frame at all decks from the boat deck
downward. An external bilge keel about 300 feet long and 25 inches deep
was fitted along the bilge amidships.
The heavy ship's plating was carried right up to the boat deck, and
between the C and B decks was doubled. The stringer or edge plate of the
B deck was also doubled. This double plating was hydraulic riveted.
All decks were steel plated throughout.
The transverse strength of the ship was in part dependent on the 15
transverse water-tight bulkheads, which were specially stiffened and
strengthened to enable them to stand the necessary pressure in the event
of accident, and they were connected by double angles to decks, inner
bottom, and shell plating.
The two decks above the B deck were of comparatively light scantling,
but strong enough to insure their proving satisfactory in these
positions in rough weather.
Water-tight subdivision.—In the preparation of the design of this
vessel it was arranged that the bulkheads and divisions should be so
placed that the ship would remain afloat in the event of any two
adjoining compartments being flooded and that they should be so built
and strengthened that the ship would remain afloat under this condition.
The minimum freeboard that the vessel would have in the event of any two
compartments being flooded was between 2 feet 6 inches and 3 feet from
the deck adjoining the top of the water-tight bulkheads. With this
object in view, 15 water-tight bulkheads were arranged in the vessel.
The lower part of C bulkhead was doubled and was in the form of a
cofferdam. So far as possible the bulkheads were carried up in one plane
to their upper sides, but in cases where they had for any reason to be
stepped forward or aft, the deck, in way of the step, was made into a
water-tight flat, thus completing the water-tightness of the
compartment. In addition to this, G deck in the after peak was made a
water-tight flat. The orlop deck between bulkheads which formed the top
of the tunnel was also water-tight. The orlop deck in the forepeak tank
was also a water-tight flat. The electric-machinery compartment was
further protected by a structure some distance in from the ship's side,
forming six separate water-tight compartments, which were used for the
storage of fresh water.
Where openings were required for the working of the ship in these
water-tight bulkheads they were closed by water-tight sliding doors
which could be worked from a position above the top of the water-tight
bulkhead, and those doors immediately above the inner bottom were of a
special automatic closing pattern, as described below. By this
subdivision there were in all 73 compartments, 29 of these being above
the inner bottom.
Water-tight doors.—The doors (12 in number) immediately above the
inner bottom were in the engine and boiler room spaces. They were of
Messrs. Harland & Wolff's latest type, working vertically. The doorplate
was of cast iron of heavy section, strongly ribbed. It closed by
gravity, and was held in the open position by a clutch which could be
released by means of a powerful electromagnet controlled from the
captain's bridge. In the event of accident, or at any time when it might
be considered desirable, the captain or officer on duty could, by simply
moving an electric switch, immediately close all these doors. The time
required for the doors to close was between 25 and 30 seconds. Each door
could also be closed from below by operating a hand lever fitted
alongside the door. As a further precaution floats were provided beneath
the floor level, which, in the event of water accidentally entering any
of the compartments, automatically lifted and thus released the
clutches, thereby permitting the doors in that particular compartment to
close if they had not already been dropped by any other means. These
doors were fitted with cataracts, which controlled the speed of closing.
Due notice of closing from the bridge was given by a warning bell.
A ladder or escape was provided in each boiler room, engine room, and
similar water-tight compartment, in order that the closing of the doors
at any time should not imprison the men working therein.
The water-tight doors on E deck were of horizontal pattern, with
wrought-steel doorplates. Those on F deck and the one aft on the Orlop
deck were of similar type, but had cast-iron doorplates of heavy
section, strongly ribbed. Each of the between-deck doors, and each of
the vertical doors on the tank top level could be operated by the
ordinary hand gear from the deck above the top of the water-tight
bulkhead, and from a position on the next deck above, almost directly
above the door. To facilitate the quick closing of the doors, plates
were affixed in suitable positions on the sides of the alleyways,
indicating the positions of the deck plates, and a box spanner was
provided for each door, hanging in suitable clips alongside the deck
plate.
Ship's side doors.—Large side doors were provided through the side
plating, giving access to passengers' or crew's accommodation as
follows:
On the saloon (D) deck on the starboard side in the forward third-class
open space, one baggage door.
In way of the forward first-class entrance, two doors close together on
each side.
On the upper (E) deck, one door each side at the forward end of the
working passage.
On the port side abreast the engine room, one door leading into the
working passage. One door each side on the port and starboard sides aft
into the forward second-class entrance.
All the doors on the upper deck were secured by lever handles, and were
made water-tight by means of rubber strips. Those on the saloon deck
were closed by lever handles, but had no rubber.
Accommodation ladder.—One teak accommodation ladder was provided, and
could be worked on either side of the ship in the gangway door opposite
the second-class entrance on the upper deck (E). It had a folding
platform and portable stanchions, hand rope, etc. The ladder extended to
within 3 feet 6 inches of the vessel's light draft, and was stowed
overhead in the entrance abreast the forward second-class main
staircase. Its lower end was arranged so as to be raised and lowered
from a davit immediately above.
Masts and rigging.—The vessel was rigged with two masts and fore and
aft sails. The two pole masts were constructed of steel, and stiffened
with angle irons. The poles at the top of the mast were made of teak.
A lookout cage, constructed of steel, was fitted on the foremast at a
height of about 95 feet above the water line. Access to the cage was
obtained by an iron vertical ladder inside of the foremast, with an
opening at C deck and one at the lookout cage. An iron ladder was fitted
on the foremast from the hounds to the masthead light.
LIFE-SAVING APPLIANCES.
Life buoys.—Forty-eight, with beckets, were supplied, of pattern
approved by the board of trade. They were placed about the ship.
Life belts.—Three thousand five hundred and sixty life belts, of the
latest improved overhead pattern, approved by the board of trade, were
supplied and placed on board the vessel and there inspected by the board
of trade. These were distributed throughout all the sleeping
accommodation.
Lifeboats.—Twenty boats in all were fitted on the vessel, and were of
the following dimensions and capacities:
Fourteen wood lifeboats, each 30 feet long by 9 feet 1 inch broad
by 4 feet deep, with a cubic capacity of 655.2 cubic feet,
constructed to carry 65 persons each.
Emergency boats:
One wood cutter, 25 feet 2 inches long by 7 feet 2 inches broad by
3 feet deep, with a cubic capacity of 326.6 cubic feet, constructed
to carry 40 persons.
One wood cutter, 25 feet 2 inches long by 7 feet 1 inch broad by 3
feet deep, with a cubic capacity of 322.1 cubic feet, constructed
to carry 40 persons.
Four Engelhardt collapsible boats, 27 feet 5 inches long by 8 feet
broad by 3 feet deep, with a cubic capacity of 376.6 cubic feet,
constructed to carry 47 persons each.
Or a total of 11,327.9 cubic feet for 1,178 persons.
The lifeboats and cutters were constructed as follows:
The keels were of elm. The stems and stern posts were of oak. They were
all clinker built of yellow pine, double fastened with copper nails,
clinched over rooves. The timbers were of elm, spaced about 9 inches
apart, and the seats pitch pine, secured with galvanized-iron double
knees. The buoyancy tanks in the lifeboats were of 18 ounce copper, and
of capacity to meet the board of trade requirements.
The lifeboats were fitted with Murray's disengaging gear, with
arrangements for simultaneously freeing both ends if required. The gear
was fastened at a suitable distance from the forward and after ends of
the boats, to suit the davits. Life lines were fitted round the gunwales
of the lifeboats. The davit blocks were treble for the lifeboats and
double for the cutters. They were of elm, with lignum vitæ roller
sheaves, and were bound inside with iron, and had swivel eyes. There
were manila rope falls of sufficient length for lowering the boats to
the vessel's light draft, and when the boats were lowered, to be able to
reach the boat winches on the boat deck.
The lifeboats were stowed on hinged wood chocks on the boat deck, by
groups of three at the forward and four at the after ends. On each side
of the boat deck the cutters were arranged forward of the group of three
and fitted to lash outboard as emergency boats. They were immediately
abaft the navigating bridge.
The Engelhardt collapsible lifeboats were stowed abreast of the cutters,
one on each side of the ship, and the remaining two on top of the
officers' house, immediately abaft the navigating bridge.
The boat equipment was in accordance with the board of trade
requirements. Sails for each lifeboat and cutter were supplied and
stowed in painted bags. Covers were supplied for the lifeboats and
cutters, and a sea anchor for each boat. Every lifeboat was furnished
with a special spirit boat compass and fitting for holding it; these
compasses were carried in a locker on the boat deck. A provision tank
and water beaker were supplied to each boat.
Compasses.—Compasses were supplied as follows:
One Kelvin standard compass, with azimuth mirror on compass platform.
One Kelvin steering compass inside of wheelhouse.
One Kelvin steering compass on captain's bridge.
One light card compass for docking bridge.
Fourteen spirit compasses for lifeboats.
All the ships' compasses were lighted with oil and electric lamps. They
were adjusted by Messrs. C. J. Smith, of Southampton, on the passage
from Belfast to Southampton and Southampton to Queenstown.
Charts.—All the necessary charts were supplied.
Distress signals.—These were supplied of number and pattern approved
by Board of Trade—i. e., 36 socket signals in lieu of guns, 12 ordinary
rockets, 2 Manwell Holmes deck flares, 12 blue lights, and 6 lifebuoy
lights.
PUMPING ARRANGEMENTS.
The general arrangement of piping was designed so that it was possible
to pump from any flooded compartment by two independent systems of
10-inch mains having cross connections between them. These were
controlled from above by rods and wheels led to the level of the
bulkhead deck. By these it was possible to isolate any flooded space,
together with any suctions in it. If any of these should happen
accidentally to be left open, and consequently out of reach, it could be
shut off from the main by the wheel on the bulkhead deck. This
arrangement was specially submitted to the Board of Trade and approved
by them.
The double bottom of the vessel was divided by 17 transverse water-tight
divisions, including those bounding the fore and aft peaks, and again
subdivided by a center fore-and-aft bulkhead, and two longitudinal
bulkheads, into 46 compartments. Fourteen of these compartments had
8-inch suctions, 23 had 6-inch suctions, and 3 had 5-inch suctions
connected to the 10-inch ballast main suction; 6 compartments were used
exclusively for fresh water.
The following bilge suctions were provided for dealing with water above
the double bottom, viz, in No. 1 hold two 3-1/2-inch suctions, No. 2
hold two 3-1/2-inch and 2 3-inch suctions, bunker hold, two 3-1/2-inch
and two 3-inch suctions.
The valves in connection with the forward bilge and ballast suctions
were placed in the firemen's passage, the water-tight pipe tunnel
extending from No. 6 boiler room to the after end of No. 1 hold. In this
tunnel, in addition to two 3-inch bilge suctions, one at each end, there
was a special 3-1/2-inch suction with valve rod led up to the lower deck
above the load line, so as always to have been accessible should the
tunnel be flooded accidentally.
In No. 6 boiler room there were three 3-1/2-inch, one 4-1/2-inch, and
two 3-inch suctions.
In No. 5 boiler room there were three 3-1/2-inch, one 5-inch, and two
3-inch suctions.
In No. 4 boiler room there were three 3-1/2-inch, one 4-1/2-inch, and
two 3-inch suctions.
In No. 3 boiler room there were three 3-1/2-inch, one 5-inch, and two
3-inch suctions.
In No. 2 boiler room there were three 3-1/2-inch, one 5-inch, and two
3-inch suctions.
In No. 1 boiler room there were two 3-1/2-inch, one 5-inch, and two
3-inch suctions.
In the reciprocating engine room there were two 3-1/2-inch, six 3-inch,
two 18-inch, and two 5-inch suctions.
In the turbine engine room there were two 3-1/2-inch, three 3-inch, two
18-inch, two 5-inch, and one 4-inch suctions.
In the electric engine room there were four 3-1/2-inch suctions.
In the storerooms above the electric engine room there was one 3-inch
suction.
In the forward tunnel compartment there were two 3-1/2-inch suctions.
In the water-tight flat over the tunnel compartment there were two
3-inch suctions.
In the tunnel after compartment there were two 3-1/2-inch suctions.
In the water-tight flat over the tunnel after compartment there were two
3-inch suctions.
ELECTRICAL INSTALLATION.
Main generating sets.—There were four engines and dynamos, each
having a capacity of 400 kilowatts at 100 volts and consisting of a
vertical three-crank compound-forced lubrication inclosed engine of
sufficient power to drive the electrical plant.
The engines were direct-coupled to their respective dynamos.
These four main sets were situated in a separate water-tight compartment
about 63 feet long by 24 feet high, adjoining the after end of the
turbine room at the level of the inner bottom.
Steam to the electric engines was supplied from two separate lengths of
steam pipes, connecting on the port side to the five single-ended
boilers in compartment No. 1 and two in compartment No. 2, and on the
starboard side to the auxiliary steam pipe which derived steam from the
five single-ended boilers in No. 1 compartment, two in No. 2, and two in
No. 4. By connections at the engine room forward bulkhead steam could be
taken from any boiler in the ship.
Auxiliary generating sets.—In addition to the four main generating
sets, there were two 30-kilowatt engines and dynamos situated on a
platform in the turbine engine room casing on saloon deck level, 20 feet
above the water line. They were the same general type as the main sets.
These auxiliary emergency sets were connected to the boilers by means of
a separate steam pipe running along the working passage above E deck,
with branches from three boiler rooms, Nos. 2, 3, and 5, so that should
the main sets be temporarily out of action the auxiliary sets could
provide current for such lights and power appliances as would be
required in the event of emergency.
Electric lighting.—The total number of incandescent lights was
10,000, ranging from 16 to 100 candlepower, the majority being of
Tantallum type, except in the cargo spaces and for the portable
fittings, where carbon lamps were provided. Special dimming lamps of
small amount of light were provided in the first-class rooms.
Electric heating and power and mechanical ventilation.—Altogether 562
electric heaters and 153 electric motors were installed throughout the
vessel, including six 50-hundredweight and two 30-hundredweight cranes,
four 3-ton cargo winches, and four 15-hundredweight boat winches.
There were also four electric passenger lifts, three forward of the
first-class main entrance and one in the second-class forward entrance,
each to carry 12 persons.
Telephones.—Loud speaking telephones of navy pattern were fitted for
communication between the following:
Wheelhouse on the navigating bridge and the forecastle.
Wheelhouse on the navigating bridge and the lookout station on the
crow's nest.
Wheelhouse on the navigating bridge and the engine room.
Wheelhouse on the navigating bridge and the poop.
Chief engineer's cabin and the engine room.
Engine room and Nos. 1, 2, 3, 4, 5, and 6 stokeholds.
These were operated both from the ship's lighting circuit, through a
motor generator, and alternatively by a stand-by battery, which by means
of an automatic switch could be introduced in the circuit should the
main supply fail.
There was also a separate telephone system for intercommunication
between a number of the chief officials and service rooms, through a
50-line exchange switchboard.
A number of the pantries and galleys were also in direct telephonic
communication.
Wireless telegraphy.—The wireless telegraphy system was worked by a
Marconi 5-kilowatt motor generator. The house for the Marconi
instruments was situated on the boat deck close to the bridge. There
were four parallel aerial wires extended between the masts, fastened to
light booms; from the aerials the connecting wires were led to the
instruments in the house. There were two complete sets of apparatus, one
for the transmitting and one for receiving messages, the former being
placed in a sound-proof chamber in one corner of the wireless house.
There was also an independent storage battery and coil, in event of the
failure of the current supply, which came from the ship's dynamos.
Submarine signaling.—The Submarine Signal Co.'s apparatus was
provided for receiving signals from the submarine bells. Small tanks
containing the microphones were placed on the inside of the hull of the
vessel on the port and starboard sides below the water level, and were
connected by wires to receivers situated in the navigating room on the
port side of the officer's deck house.
Various.—The whistles were electrically actuated on the Willett Bruce
system. The boiler-room telegraphs, stoking indicators, rudder
indicators, clocks and thermostats were also electrical. The water-tight
doors were released by electric magnets.
Emergency circuit.—A separate and distinct installation was fitted in
all parts of the vessel, deriving current from the two 30-kilowatt sets
above mentioned, so that in the event of the current from the main
dynamos being unavailable an independent supply was obtainable.
Connected to the emergency circuit were above 500 incandescent lamps
fitted throughout all passenger, crew, and machinery compartments, at
the end of passages, and near stairways, also on the boat deck, to
enable anyone to find their way from one part of the ship to the other.
The following were also connected to the emergency circuit by means of
change-over switches: Five arc lamps, seven cargo and gangway lanterns,
Marconi apparatus, mast, side, and stern lights, and all lights on
bridge, including those for captain's, navigating, and chart rooms,
wheelhouse, telegraphs and Morse signaling lanterns, and four
electrically-driven boat winches. These latter, situated on the boat
deck, were each capable of lifting a load of 15 hundredweight at a speed
of 100 feet per minute.
Ventilating.—There were 12 electrically-driven fans for supplying air
to the stokeholds, 6 electrically-driven fans for engine and turbine
room ventilation. There were fans for engine and boiler rooms.
MACHINERY.
Description.—The propelling machinery was of the combination type,
having two sets of reciprocating engines driving the wing propellers and
a low-pressure turbine working the center propeller. Steam was supplied
by 24 double-ended boilers and 5 single-ended boilers, arranged for a
working pressure of 215 pounds per square inch. The turbine was placed
in a separate compartment aft of the reciprocating-engine room and
divided from it by a water-tight bulkhead. The main condensers, with
their circulating pumps and air pumps, were placed in the turbine room.
The boilers were arranged in six water-tight compartments, the
single-ended boilers being placed in the one nearest the main engines,
the whole being built under board of trade survey for passenger
certificate.
Reciprocating engines.—The reciprocating engines were of the
four-crank triple-expansion type. Each set had four inverted,
direct-acting cylinders, the high-pressure having a diameter of 54
inches, the intermediate pressure of 84 inches, and each of the two
low-pressure cylinders of 97 inches, all with a stroke of 6 feet 3
inches. The valves of the high-pressure and intermediate cylinders were
of the piston type, and the low-pressure cylinder had double-ported
slide valves, fitted with Stephenson link motion. Each engine was
reversed by a Brown type of direct-acting steam and hydraulic engine.
There was also a separate steam-driven high-pressure pump fitted for
operating either or both of the reversing engines. This alternative
arrangement was a stand-by in case of breakdown of the steam pipes to
these engines.
Turbine.—The low-pressure turbine was of the Parsons reaction type,
direct coupled to the center line of shafting and arranged for driving
in the ahead direction only. It exhausted to the two condensers, placed
one on each side of it. A shut-off valve was fitted in each of the
eduction pipes leading to the condensers. An emergency governor was
fitted and arranged to shut off steam to the turbine and simultaneously
change over the exhaust from the reciprocating engines to the
condensers, should the speed of the turbine become excessive through the
breaking of a shaft or other accident.
Boilers.—All the boilers were 15 feet 9 inches in diameter, the 24
double-ended boilers being 20 feet long, and the single-ended 11 feet 9
inches long. Each double-ended boiler had six and each single-ended
boiler three furnaces, with a total heating surface of 144,142 square
feet and a grate surface of 3,466 square feet. The boilers were
constructed in accordance with the rules of the board of trade for a
working pressure of 215 pounds per square inch. They were arranged for
working under natural draft, assisted by fans, which blew air into the
open stokehold.
Auxiliary steam pipes.—The five single-ended boilers and those in
boiler rooms Nos. 2 and 4 had separate steam connections to the pipe
supplying steam for working the auxiliary machinery, and the five
single-ended boilers and the two port boilers in boiler room No. 2 had
separate steam connections to the pipe supplying steam for working the
electric-light engines. A cross connection was also made between the
main and auxiliary pipes in the reciprocating-engine room, so that the
auxiliaries could be worked from any boiler in the ship. Steam pipes
also were led separately from three of the boiler rooms (Nos. 2, 3, 5)
above the water-tight bulkheads and along the working passage to the
emergency electric-light engines placed above the load line in the
turbine room. Pipes were also led from this steam supply to the pumps in
the engine room, which were connected to the bilges throughout the ship.
Main steam pipes.—There were two main lines of steam pipes led to the
engine room, with shut-off valves at three of the bulkheads. Besides the
shut-off valves at the engine-room bulkhead, a quick-acting emergency
valve was fitted on each main steam pipe, so that the steam could at
once be shut off in case of rupture of the main pipe.
Condensing plant and pumps.—There were two main condensers, having a
combined cooling surface of 50,550 square feet, designed to work under a
vacuum of 28 inches with cooling water at 60° F. The condensers were
pear shaped in section, and built of mild steel plates.
Four gun-metal centrifugal pumps were fitted for circulating water
through the condensers. Each pump had suction and discharge pipes of
29-inch bore, and was driven by a compound engine. Besides the main sea
suctions, two of the pumps had direct bilge suctions from the turbine
room and the other two from the reciprocating-engine room. The bilge
suctions were 18 inches diameter. Four of Weir's "Dual" air pumps were
fitted, two to each condenser, and discharged to two feed tanks placed
in the turbine engine room.
Bilge and ballast pumps.—The ship was also fitted with the following
pumps: Five ballast and bilge pumps, each capable of discharging 250
tons of water per hour; three bilge pumps, each of 150 tons per hour
capacity.
One ash ejector was placed in each of the large boiler compartments to
work the ash ejectors, and to circulate or feed the boilers as required.
This pump was also connected to the bilges, except in the case of three
of the boiler rooms, where three of the ballast and bilge pumps were
placed. The pumps in each case had direct bilge suctions as well as a
connection to the main bilge pipe, so that each boiler room might be
independent. The remainder of the auxiliary pumps were placed in the
reciprocating and turbine engine rooms. Two ballast pumps were placed in
the reciprocating-engine room, with large suctions from the bilges
direct and from the bilge main. Two bilge pumps were also arranged to
draw from bilges. One bilge pump was placed in the turbine room and one
of the hot salt-water pumps had a connection from the bilge main pipe
for use in emergency. A 10-inch main ballast pipe was carried fore and
aft through the ship with separate connections to each tank, and with
filling pipes from the sea connected at intervals for trimming purposes.
The five ballast pumps were arranged to draw from this pipe. A double
line of bilge main pipe was fitted forward of No. 5 boiler room and aft
of No. 1.
GENERAL.
There were four elliptical-shaped funnels; the three forward ones took
the waste gases from the boiler furnaces, and the after one was placed
over the turbine hatch and was used as a ventilator. The galley funnels
were led up this funnel. The uptakes by which the waste gases were
conveyed to the funnels were united immediately above the water-tight
bulkhead which separated the boiler rooms.
All overhead discharge from the circulating pumps, ballast pumps, bilge
pumps, etc., were below the deep load line, but above the light line.
The boilers were supported in built steel cradles, and were stayed to
the ship's side and to each other athwart ships by strong steel stays.
Built steel chocks were also fitted to prevent movement fore and aft.
Silent blow-offs from the main steam pipes were connected direct to both
condensers.
CREW AND PASSENGERS.
When the Titanic left Queenstown on April 11 the total number of
persons employed on board in any capacity was 885.
The respective ratings of these persons were as follows:
| Deck department | 66 |
| Engine department | 325 |
| Victualing department | 494 |
| | 885 |
Eight bandsmen were included in the second-class passenger list.
In the deck department the master, Edward Charles Smith, held an extra
master's certificate; Chief Officer H. F. Wilde held an ordinary
master's certificate; First Officer W. M. Murdock held an ordinary
master's certificate; Second Officer C. H. Lightoller held an extra
master's certificate; Third Officer H. J. Pitman held an ordinary
master's certificate; Fourth Officer J. G. Boxall held an extra master's
certificate; Fifth Officer H. G. Lowe held an ordinary master's
certificate; Sixth Officer J. P. Moody held an ordinary master's
certificate.
In the engine department were included the chief engineer and 7 senior
and 17 assistant engineers.
In the victualing department there were 23 women employed.
The total number of passengers on board was 1,316.
| | Male. | Female. | Total. |
| Of these— | | | |
| First class |
180 |
145 |
325 |
| Second class |
179 |
106 |
285 |
| Third class |
510 |
196 |
706 |
| |
|
|
1,316 |
| |
|
|
|
Of the above 6 children were in the first class; 24 children were in the
second class; 79 children were in the third class; or 109 in all.
About 410 of the third-class passengers were foreigners, and these, with
the foreigners in the first and second class and in the victualing
department, would make a total of nearly 500 persons on board who were
presumably not English speaking, so far as it is possible to ascertain.
The disposition of the different classes of passengers and of the crew
in the ship has already been described (pp. 10-15). In all, 2,201
persons were on board.