As a ship moves through the water, it drags with it a body of water called the wake. The ratio of the wake speed to the ship’s speed is called __________.?
A) propeller velocity B) speed of advance C) wake distribution D) wake fraction E)NULL
Arşivler Sorular
Which device is designed to automatically hold the load if power should fail to an electric winch?
A) Pneumatic brake B) Electromagnetic brake C) Hand brake D) Motor controller E)NULL
You have orders to load cargoes of carbon disulfide, diisopropylamine and pyridine on your multi-product tankship. Which statement is true?
A) Carbon disulfide may be carried in NOS. 1 and 2 center tanks and diisopropylamine in NOS. 1 and 2 wing tanks. B) Pyridine and diisopropylamine may not be carried in tanks having a common header vent. C) Pyridine must…
You are on a course of 000°T and put the rudder right 30°. In which direction will the transfer be measured?
A) 000°T B) 090°T C) 180°T D) 270°T E)NULL
Cargo pump relief valves are piped to the __________.?
A) cargo pump pressure gauges B) crossover lines interconnecting two pumps C) suction side of pumps D) atmosphere through pump vents E)NULL
The pivoting point of a vessel going ahead is __________.?
A) about one-third of the vessel’s length from the bow B) about two-thirds of the vessel’s length from the bow C) at the hawsepipe D) near the stern E)NULL
Your twin-screw vessel is moving ASTERN with rudders amidships. The starboard screw suddenly stops turning. Your vessel’s head will __________.?
A) go to port B) go to starboard C) remain stationary D) suddenly drop down E)NULL
The anchors on the bow are known as __________.?
A) bower anchors B) kedge anchors C) spare anchors D) stream anchors E)NULL
The “lay” of a line refers to __________.?
A) its normal location of stowage B) the direction of twist in the strands C) the manner in which it is coiled D) the manner in which it is rigged E)NULL
What is normally used to pass a mooring line to a dock?
A) Distance line B) Gantline C) Heaving line D) Tag line E)NULL