-boat creates a distinct wave on the surface of
the water which can be followed by the chaser. The little boats are just
what their name implies--chasers--and besides having the qualities
already described they may conceal themselves behind large steamers, and
when the submarine in preparing to launch a torpedo makes its presence
known the chaser may speed from its hiding place and drive the underseas
craft away, even if it does not succeed in injuring it.

OPERATING IN CONNECTION WITH AN AEROPLANE.

The chasers also have a special facility of operation in connection with
the aeroplane or seaplane, principally because of their high speed; and
next to the chaser the aeroplane is one of the submarine's worst
enemies. Used in conjunction with the regular torpedo boat destroyers of
the navy, the chaser and the aeroplane promise in future wars to
minimize the effectiveness of the underseas craft. This is proven by the
fact that immediately after the United States naval forces joined those
of the Allies in European waters, the disasters resultant upon submarine
attacks were greatly reduced. The speedy destroyers, while not actually
sinking many submarines, by their vigilance prevented the submarine from
operating.

Large types of the chasers ordered in this country by the Russian
Government are 72 feet long by 11 feet 3 inches wide and draw 3 feet 3
inches of water. Each boat carries three of the 8-cylinder 6-3/4 x 7-3/4
Duesenberg, 350 to 400 horsepower motors. The boats carry an 18-inch
torpedo tube amidships and a 47-millimetre rapid-fire gun on the forward
deck. They are controlled from the bridge deck with a sheltered cabin
for the quartermaster, with controls from either the shelter or bridge
deck. They have a guaranteed speed of twenty-eight knots.

Deck arrangements consist of the following: A hatch to the fo'castle,
followed by; the emplacement for the rapid-fire gun. Following this is
the steering shelter containing duplicate controls, &c., for the engine
room and for the steering. Immediately aft of the steering shelter is
the bridge deck, located on top of the engine room trunk house. The
entire after half of the vessel is a clear sweep of deck with the
exception of a booby hatch to crews' quarters well aft.

The boats are arranged for wireless with foremast and jigger mast. Rail
stanchions in the way of the torpedo tube are hinged down, giving clear
sweep to the tube for firing purposes.

PROVISION FOR