CHIEF ENGINEER Unit 16 Q1

1 / 7

What is one key way to reduce the risk associated with the critical period?

C) Adding weight to the vessel during docking

B) Gradually lowering the water level to allow slow and controlled settling

A) Increasing the speed of water drainage

D) Moving the vessel frequently during settling

2 / 7

What is meant by the "critical period" when a vessel is settling onto dock blocks?

C) The time when cleaning and painting begin

A) The period when the crew exits the vessel

D) The period just before the vessel exits the dock

B) The moment when the vessel's weight transfers from water buoyancy to dock blocks

3 / 7

What additional measure can help ensure a safe transfer of weight during the critical period?

C) Quickly removing all water to accelerate settling

A) Filling ballast tanks to increase weight on the blocks

B) Adjusting the block layout to match the hull’s support needs

D) Only docking in shallow waters

4 / 7

Which of the following structural risks is increased during the critical period of dry-docking?

C) Increased speed

B) Hull deformation or buckling

A) Cargo shifting

D) Lower fuel efficiency

5 / 7

Why must docking personnel be especially vigilant during the critical period?

C) To allow passengers to exit the vessel

D) To prevent waves from disturbing the dock

A) To ensure all crew are wearing proper safety gear

B) To monitor for any structural signs of stress or shifting of the vessel on the blocks

6 / 7

Why is the critical period considered dangerous for the vessel’s structure?

D) The vessel is not held by any support during this period

C) The vessel experiences a loss of even buoyant support, which can create stress concentrations

B) The vessel undergoes rapid movement on the blocks

A) The vessel is likely to slip off the blocks

7 / 7

During the critical period, why is it essential to control the vessel’s descent onto the blocks carefully?

D) To allow crew members to disembark safely

B) To avoid any shift of cargo on board

A) To prevent damaging the blocks themselves

C) To ensure an even distribution of the vessel's weight on the blocks

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