Manoeuvre the ship Flashcards

1
Q

Where is the Pivot point of the vessel? 3 stages?

A

Stationary, generally amidships

Kicking ahead, Right forward

Underway, Generally 1/3 or 25% from forward

AFT is the opposite when going astern

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2
Q

What is transverse thrust?

A

Transverse movement created by the direction of the propellor in a single screw vessel

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3
Q

Where do we find info on vessels tendency to squat?

A

Manoeuvre card posted in the bridge

and manoeuvre booklet

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4
Q

Explain bank effect (bow cushion effect)

A

Close to a bank, Pressure of bow wave will send bow away

Low pressure at the stern will attract the stern towards the bank

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5
Q

Modes of steering on board

A

Hand steering, FU and NFU
Automatic pilot, track control and heading mode
ME’s
Thrusters
Emergency steering

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6
Q

Difference between FU and NFU steering

A

FU steering, the rudder will follow the command at the helm. 10Degrees to port will send the rudder to 10Degrees to port, and so forth

NFU steering, the rudder will move to port or stbd so long as the lever is held down. Once the lever is released, it will spring back to centre, and the rudder will remain at the angle achieved until counter helm is applied

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7
Q

Track control

A

Needs ECDIS input and GPS input to follow a pre laid track on ECDIS

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8
Q

Heading mode

A

Needs a Gyro to follow a predetermined heading

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9
Q

What affects stopping distance?

A

Vessel Shape beneath the waterline, presence of a bulb
Running gear
ME’s power
Speed
Interaction/squat
Current and sea state

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10
Q

What affects the turning circle?

A

Current and sea state
Speed moving ahead
Type of steering/running gear
Type of Rudder
Length of vessel/shape beneath the waterline

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