was necessary
to so arrange the saloons as to admit of sleeping accommodation being
provided on these occasions. On the Liverpool run the vessel will
carry from 800 to 900 passengers. A spacious promenade is an
indispensable desideratum, and the upper or shelter deck has been made
flush from stem to stern, the only obstructions in addition to the
engine and boiler casings, and the deck and cargo working machinery,
being a small deck house aft with special state rooms, ticket and post
offices, and the companion way to the saloons below. On the main deck
forward is a sheltered promenade for second class passengers, while on
the lower deck below are dining saloons, the sofas of which may be
improvised for sleeping accommodation. At the extreme after end of the
main deck is the first class saloon, with the ladies' room forward on
the starboard side, and, there being no alley way forward, the ladies'
lavatories are provided on the starboard side of the engine casing. On
the port side are the gentlemen's lavatories, and smoking saloon and
bar. The dining saloon is aft on the lower deck, with ladies' room
forward. In the two saloons and ladies' rooms sofa berths can be
arranged to accommodate 252 passengers. The crew and petty officers
are accommodated in the forward part of the ship. As the profile
shows, the vessel is divided by transverse bulkheads into seven
watertight compartments, and there are double bottoms. She has six
large boats and several rafts.

[Illustration: THE LIVERPOOL AND ISLE OF MAN TWIN SCREW STEAMER
TYNWALD.]

The twin screws are revolved by separate triple expansion engines,
steam being supplied by two double-ended boilers. Each boiler is
placed fore and aft, and each has a separate uptake and funnel. There
are three stokeholds, and to ventilate them and supply sufficient air
for the furnaces there is in each a 6 foot fan driven by an
independent engine running at 250 revolutions. These have been
supplied by Messrs. W.H. Allen & Co., London. The boilers are of steel
and adapted for a working pressure of 160 lb. to the square inch. They
are 16 feet in diameter and 18 feet long, and there are eight furnaces
in each boiler, sixteen in all, the diameter of each furnace being 3
feet 41/2 inches.

The cylinders of the main engines are 22 in., 36 in., and 57 in. in
diameter respectively, with a piston stroke of 3 ft. The high-pressure
cylinders are each fitted with a piston valve, and the intermediate
an