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Home Online tests CBT Test about Basic Ship Handling (CBT)
Online testing: Test about Basic Ship Handling (CBT)
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A conventional rudder can be expected to be effective up to:
20-25° rudder angle.
70-75° rudder angle.
40-45° rudder angle.
50-55° rudder angle.
A ships manoeuvring characteristics are directly related to:
Engine power.
Hull form.
Rudder type.
L/B ratio.
A ships ability to manoeuvre depends on:
Steering and turning ability.
Steering and stopping ability.
Turning and stopping ability.
Steering, stopping and turning ability.
An experienced shiphandler is expected to:
Execute ship handling quickly.
Make a ship do what they want when they want.
Make a ship do what it is expected to do.
Take good care of the machinery during the ship handling operation.
For most ships, how far is the “wheel over point” from the start point of the turn?
0,5-1,0 ship length.
1,0-1,5 ship lengths.
1,5-2,0 ship lengths.
2,0-2,5 ship lengths.
Forces acting upon a ship during manoeuvring are in this course divided into how many groups?
2 groups.
3 groups.
4 groups.
5 groups.
If a rudder has its entire area aft of the rudder stock, then it is:
Unbalanced.
Semi-balanced.
Balanced.
Counter balanced.
The Twin Schilling rudders can rotate through a total arc of:
45°.
70°.
110°.
145°.
The change of pitch of the CP propeller is usually done by:
Hydraulic power.
Mechanical power.
Electrical power.
Manually.
The helicopter pilot is normally situated on:
Port side of the helicopter cockpit.
Starboard side of the helicopter cockpit.
Centre of the helicopter cockpit.
In the back of the helicopter cockpit.
What effect has shallow water on ships turning radius?
The turning radius is reduced.
There is no effect on the turning radius.
The turning radius is increased.
The ship is not able to turn at all.
What influence to-days ship designs the most?
Seafarer interests.
Commercial interests.
Environmental interests.
National interests.
What is ship handling?
Operating lines and anchors in a proper way.
Operating the main engine in a proper way.
Operating the main engine and thrusters in a proper way.
Using forces under control to manage forces not under control.
What is the advantage of the “Single turn”?
It brings the ship back on an opposite course.
It stops the ship quickly.
The speed is reduced very little.
It is the fastest way to turn the ship around.
What is the advantage of the “Williamson turn”?
It brings the ship back on an opposite course.
It stops the ship quickly.
The speed is reduced very little.
It is the fastest way to turn the ship around.
What is the angle of the Twin Schilling rudders when full astern power is ordered?
70°.
95°.
105°.
145°.
What is the approximate emergency stopping distance for a 250 000 tdw VLCC travelling at 16 knots?
1 Nautical mile.
3 Nautical miles.
5 Nautical miles.
7 Nautical miles.
What is the first bridge response in an “immediate action” man overboard situation?
Rudder hard over to the side of the casualty.
Order stand-by in engine.
Sound the general alarm.
Prepare a pick-up boat.
What is the main purpose of the “combinator” in a CPP system?
Improve propeller efficiency.
Reduce fuel consumption.
Reduce engine load.
Adjust engine RPM against propeller pitch.
What is the main purpose of the “flap rudder”?
To obtain cheaper rudder operation cost.
To reduce rudder size.
To ensure smoother water flow over the rudder.
To increase rudder reliability.
What kind of propeller are most ships equipped with?
Fixed propeller.
Variable pitch propeller.
Constant speed propeller.
Ducted propeller.
What will happen with the pivot point when your ship is making headway?
It will move forward.
It will move astern.
It will be in the centre of the vessel.
It will move down to the bottom of the vessel.
What will happen with water when it is forced to pass under the hull in shallow waters?
The speed of the water will increase and the pressure will decrease.
The speed of the water will increase and the pressure will increase.
The speed of the water will decrease and the pressure will increase.
The speed of the water will decrease and the pressure will decrease.
Where is the safest place to learn ship handling?
On a small ship with a powerful engine.
On a small ship with little engine power available.
On a ship handling simulator.
On a model ship.
Which alternative below lists three forces under control?
Main engine – Thruster – Anchor.
Rudder – Inertia Momentum – Current.
Propeller – Thruster – Fouling.
Hydrodynamic forces – Rudder – Moorings.
Which of the following methods is best to obtain precision track keeping in a turn?
Using fixed rate of turn.
Using preset turning radius.
Using autopilot.
Using manual steering.
Which of the following rudder types gives the smallest turning diameter?
Normal rudder.
Rotor rudder.
T-rudder.
Flap rudder.
Which propulsion system tends to be the least expensive to operate?
Turbines.
Steam turbines.
Gas turbines.
Diesel engines.
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