Some General WWI Submarine Chaser Facts and Figures:

Construction statistics

Total number ordered: 448
Total completed: 441
Total in WWI war time service as U.S.N. vessels: 303
Total assigned to overseas service: 133

Materials

Frame/floors: white oak. Planking: yellow pine. Deck planking: Oregon pine.
Length: 110'
Beam: 14' 8-3/4 "
Full load displacement: 75 tons

Propulsion System

Maine Engines: Three - Standard Motor Construction Company 6-cylinder, 220 hp, air-starting and reversing engines.
10" bore, 11" stroke. Weight: 6,300 lbs. (each).

Auxiliary Engine: One - Standard Motor auxiliary engine.
2-cylider, 4-1/2" bore, 5-1/2" stroke.

Fuel: Gasoline. Tank capacity 2,400 gallons

Cruising radius: About 1,000 nautical miles

Theoretical top speed: 18 knots
Actual Cruising speed of about 12 knots; top speed around 14 to 16 knots

Crew

Officers and Crew: Two officers. 22 crewmen, give or take.

Equipment

Armament: Typical arrangement was one 3" deck gun forward, a Y-gun (depth charge launcher) amidships and depth charge racks on the stern. Machine guns were typically mounted on the bridge wings.

Submarine detection devices: SC-type C-Tube hydrophone and K-Tube hydrophone (designed by the Submarine Signal Company of Boston, Massachusetts), Trailing wire, and later, MB-Tube hydrophone.

Communications systems: Radio telephone, radio telegraph, shape signals and Bearing Indicator