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YFU - Harbor Utility Craft

The YFU is a 115 foot by 34 foot self-propelled harbor utility craft, triple screw diesel engine driven, capable of carrying motor vehicles or artillery and disembarking such cargo over a hinged bow ramp directly onto the beach.

ADMINISTRATIVE DATA

Specifications: Detail and Special Specifications for Building Landing Ship, Utility LSU 1466 Class 21 Feb 1951

PHYSICAL CHARACTERISTICS

NOTE: Size varies between Classes.

Length Overall, molded

115'-1"

Length between perpendiculars

105'

Beam, molded

34'

Depth, molded to main deck (no camber, no sheer) amidship

6'

Depth, molded to top of bulwark

10'-6"

Draft, landing displacement (forward)

2'-9"

Draft, landing displacement (aft)

5'-3"

Displacement, light

180 tons

Displacement, landing (estimated)

347 tons

Diesel oil capacity

11 tons

Fresh water capacity (total)

35 tons

Lubricating oil capacity

0.5 tons

Speed

8 knots

Range

1,200 Nautical miles at 6 knots

PRINCIPAL MACHINERY and EQUIPMENT

Three vertical, six-cylinder, compression-ignition, solid injection main propulsion diesel engines, 165 brake horsepower at 1800 rpm continuous. 225 brake horsepower at 2100 rpm (6 hours emergency).

Two 20 kw, 120 volt DC, 2 wire diesel, battery start ship's service generator sets

Manual operated, mechanical type steering machinery

Electric winch to raise and lower the bow ramp

Single drum, reversible, gasoline driven type stern anchor winch

Bilge pump, self-priming centrifugal type, 150 gpm at 15 psi

Fire pump, centrifugal type, 100 gpm at 100 psi

Fresh water pump, self-priming peripheral type, 5 gpm at 40 psi

Fuel oil transfer pump, rotary type, 15 gpm at 25 psi

HULL, STRUCTURE and FITTINGS

Hull - Steel

Principal compartments:

Pilothouse

Engine Room

CPO Quarters

Crew's quarters

Galley and messroom

Special Fittings:

Davit

Towing bitts

Chocks

Cleats

Padeyes

LIVING

Berthing

Chief Petty Officers' quarters - Two berths

Crew's quarters - Twelve berths

Galley/Messroom

One mess table, 2 mess benches

One range

One electric refrigerator

One electric coffee urn

Sanitary

One shower

Two waterclosets

Two lavatories

One urinal

SAFETY

Anchor

One anchor, 1500 pounds, 150 fathoms, of 1 inch diameter, 6 x 37, galvanized high grade plow steel wire rope.

Anchor winch capable of a maximum line load of 30,000 pounds at a line speed of at least 9 feet per minute.

Life Saving

One 15-person life raft

One 12-foot plastic dinghy

Fire

Ten portable 15 pound carbon dioxide extinguishers

Firemain System

Sprinkling System

One NPU nozzle with a pick-up tube and two five gallon cans of foam liquid

Drainage - Eductor and drainage piping is sized so that with the eductor supplied with water from the firemain system 50 gpm of drainage water can be drawn.

OPERATION

Propulsion - Three propellers, 3'-2" in diameter, two right hand (starboard and centerline), one left hand (port), each driven by a diesel engine which drives the propeller shaft and propeller through a reverse reduction gear.

Steering

Manually operated, mechanical type with steering control in pilot house.

Travel of three main rudders limited to 35° port and starboard.

Control

Pilot house control for starting, stopping, reversing, and varying the speed of diesel engines.

Helm angle Indicator at steering station.

AUXILIARY MACHINERY and FLUID SYSTEM

Fresh water

Pressure tank type system, 40 gallon pressure tank

Hot water for domestic purposes provided by a commercial water heater

Diesel Oil - motor driven fuel oil pump 15 gpm at 25 psi takes suction from fuel oil storage tanks and discharges to fuel oil service talks for main propulsion engines and diesel generators.

Lube Oil -

200 gallon capacity lube oil storage tank. Filling of engine sumps with clean lube oil from storage tank by hand container

Heating - Two-pipe hot water heating system. Water is heated by an oil-fired hot water heating boiler.

Ventilation

Bracket fans provided as follows:

Crew berthing (2), messroom (1). and CPO berthing (1).

Air velocities not exceeding 3,500 feet per minute.

Compressed Air - 120-volt AC motor driven air compressor and pressure tank for supply of air to the pneumatic engine control system is provided with the propulsion engines.

ELECTRICAL

Generator - Two 20 kw, 120 volt DC, 2 wire diesel, battery start

Battery -

Three 24-volt storage batteries for starting propulsion engines and ship's service generators

One 12-volt storage battery for starting anchor winch engine

Shore Power - One shore terminal box to accommodate two sets of cable lugs.

Switchboard - Ship's service power switchboard

Bulkhead - mounted interior communication switchboard

COMMUNICATION

Interior Communication

Sound-powered telephones

Voice tubes

Electronics

Radio - Transmitter-receiver

Radar - 500 watts



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Page last modified: 07-07-2011 13:01:26 ZULU