Engineering
Boat Specs
Nautical Terms
Seamanship
Lifeboat History
100

Reduction Gears in the 47MLB

Reintjes WVS 234 UP 

100

Highest fixed point

18' 6" radar antenna 

100

Side of vessel towards the wind

Windward

100

not used to create a temporary eye in a line

Bowline

100

Year the first production craft, 47206, entered service

1997

200

Total Lube oil capacity in the R/G 

7.1 gallons of 30 weight

200

Average time underwater for a rollover

8-12 seconds

200

the lowest part of a wave form between successive wave crests

wave trough 

200

Sag in a line which provides a spring or elastic effect while towing

Catenary

200

What was the only 52' lifeboat that was ever lost at sea **

TRIUMPH CG52301 1961

300

How much coolant is used in the heat exchanger 

10-12 gallons of a 50/50 mixture of power cool and distilled water

300

Maximum personnel on the boat, including crew ** 


double Jeopardy if both parts answered correctly

34 (at 180lbs each)

300

On a vessel, the amount of surface upon which the wind acts. 

Sail area

300

Buoyage used in North/ South America, Japan, South Korea, and Philippines

IALA-B 

300

When do surf conditions exist

when breaking seas exceed 8'  and/or when, in the judgment of the CO/OIC, rough bar conditions exist and/or whenever there is doubt in the mind of the coxswain as to the present conditions. 

400

This will reduce back pressure when one exhaust port is submerged. 

crossover valve

400

Righting arm of the 47MLB

70 -110°

400

to move a boat sideways through the water 

crabbing

400

Made of three strands, right or left laid. 

Plain laid

400

Year SPC-HWX INVINCIBLE was stationed at Grays Harbor

1960

500

Seven functions of the Electronic Control Modules ECM 

Engine Governing

Cold star fueling and timing

Engine protection and diagnostics 

injection timing

rated speed and power 

Sensor calibrations 

Smoke control


500

coasting deceleration distance of the 47MLB

average of 1'10" covering a distance of approximately 400' 

500

A mark on a ship's side indicating how deeply she may be loaded. 

Plimsoll Mark

500

Slanted lettering on a chart indicates what

information that is affected by tidal or current change 

500

Warranted Risk

The probability of saving human life warrants a maximum effort. When no suitable alternative exists and the mission has a reasonable chance of success, the risk of damage to or abuse of the boat is acceptable, even though such damage or abuse may render the boat unrecoverable.  

The possibility of saving human life or the probability of preventing or relieving intense pain or suffering warrants the risk of damage to or abuse of the boat if recovering the boat can reasonably be expected. 

The probability of saving property of the US or its citizen warrants the risk of damage to the boat if the value of the property to be saved is unquestionably greater than the cost of the damage and the boat is fully expected to be recovered.