DWO Ship Operations and Maintenance 3

Question 1

What is the correct procedure when a hydraulic steering failure occurs at sea?

Accepted Answer

Switch to emergency steering and notify the master

Answer

The immediate action is to engage emergency steering aft and inform the master so the ship can be maneuvered safely.

Question 2

Which of the following best describes 'squat' in shallow water operations?

Accepted Answer

The sinkage and trim change as a vessel's speed increases in shallow water

Answer

Squat is the hydrodynamic phenomenon where a ship sinks deeper and trims as speed increases in shallow or confined water.

Question 3

What is the function of a chain stopper on a vessel?

Accepted Answer

To secure the anchor chain and relieve strain on the windlass

Answer

A chain stopper holds the anchor chain securely at anchor, transferring load from the windlass to the deck fitting.

Question 4

Under MARPOL Annex I, what is the maximum oil content permitted in overboard discharges outside special areas?

Accepted Answer

15 ppm

Answer

MARPOL Annex I allows discharge of processed bilge water with an oil content not exceeding 15 ppm outside special areas.

Question 5

What does the term 'deadweight tonnage' (DWT) represent?

Accepted Answer

The total weight a vessel can carry, including cargo, fuel, water, and stores

Answer

DWT is the total carrying capacity expressed in metric tons, encompassing cargo, fuel, fresh water, ballast, crew, and provisions.

(DWO) Deck Watch Officer Practice Test