WorksheetsOJT DAY 4 QUIZ
Total questions: 10
Worksheet time: 5mins
These are fins or rotors mounted beneath the waterline and emerging laterally from the hull to reduce a ship's roll due to wind or waves. Active fins are controlled by a gyroscopic control system.
RUDDER
STABILIZER
KEEL
PROPELLER
What are the disadvantages of stabilizers?
Reduce speed and increased drag and fuel
Increased speed and fuel
Increased efficiency and stability
Decreased speed and drag
What are the advantages of using a stabilizer?
Decreased rolling and comfortability
Increased drag and comfortability
Reduced rolling and increased comfortability
Increased rolling and drag
A piece of equipment used to convert the output shaft revolutions of the main engine to those required to rotate the propeller
Rudder
Shafting
Propeller
Reduction gear
It is one of the components in a propulsion system used to transmit power.
Rudder
Shafting
Propeller
Engine
A device used for steering and maneuvering a vessel. They are located normally at the stern behind propeller(s) to produce a transverse force and steering moment about the ship's center of gravity by deflecting the water flow to the direction.
Shafting
Propeller
Rudder
Engine
A device with a rotating hub and radiating blades that when rotated it performs an action that transforms rotational power into linear thrust by acting upon a working fluid, such as water or air.
Engine
Shafting
Rudder
Propeller
It is cheaper and more robust than a CPP, it is efficient for a single specific rotational speed and load condition.
Rudder
Fixed pitch propeller
Controllable pitch propeller
Thrust
This is simply the diameter of a circle scribed by the blade tips of the propeller.
Inside diameter
Outside diameter
Propeller diameter
Pitch diameter
This type of rudder commonly used by small boats and ferries.
Propeller rudder
Flap rudder
Half rudder
Spade rudder
