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Q: Is the following statement true or false? ‘Oil spills only occur during cargo loading and discharging operations.’
A: False.

Q: Tanks can overfill because of human error, possibly leading to a spill. Which of the following options could cause a tank to overfill?
x A: A vacuum lock in the filling valve

Q: Which of the following statements is…[Read more]

Q: When carrying out checks of the atmosphere in a cargo tank following gas freeing, at how many levels in the tank should samples be taken to ensure there are no variations in the tank atmosphere? Select the ONE correct answer.
XX A: Samples should be taken every metre depth in the tank.

Q: Which of the options correctly fills the gap? ‘The…[Read more]

Q: When rusting of a ship’s steelworks occurs, which ONE of the following is the main effect on the air inside a ballast tank or cargo tank?
A: The oxygen content of the air decreases.

Q: Which of the following toxicity threshold limit exposure terms would normally have the lowest numerical value?
A: TLV-C

Q: Which term is used for the property…[Read more]

Q: Why have many of the natural barriers to the spread of species reduced? Select the TWO best answers.
A: Rapidly increasing world trade. Larger and faster ships completing their voyages in a shorter time.

Q: What is the estimated number of species transported by ship ballast?
A: More than 10,000 species

Q: According to this module, which three…[Read more]

Q: How should entry to an enclosed space be controlled? Select the ONE correct answer.
A: The attendant should keep a record (tally) on who goes in and comes out.

Q: During an entry to an enclosed space, where should rescue equipment be located? Select the ONE correct answer.
A: At the entrance to the space.

Q: If you are inside an enclosed…[Read more]

Q: Which ONE of the following is the best definition of an enclosed space? Select the ONE best answer.
A: Any space with limited openings for entry and exit or poor ventilation.

Q: How much oxygen is present in normal atmospheric air? Select the ONE correct answer.
A: 21% by volume.

Q: What is the maximum acceptable reading on a flammable gas…[Read more]

Q: Which of the following demonstrates a positive type of behaviour?
A: Responsive.

Q: Why is it important to have pollution drills?
A: They ensure that planned procedures will work.

Q: How does a crewmember know what their role is in the emergency pollution plan?
A: They will be briefed for it and it may also be shown on the muster list.

Q:…[Read more]

Q: Which of the following BEST defines the term ‘working at height’?
A: When a worker is able to fall from one level to another, and be injured in doing so.

Q: Is the following statement true or false? ‘Before starting any work at height, there should be a full risk assessment undertaken and a permit to work issued.’
A: True

Q: How many points…[Read more]

Q: What to do when boiler is over-pressurised?

If my hot water kettle at home is boiling over, obviously first thing is switch off power (or cut off the gas if I’m boiling using stove). Same principle apply to onboard. Assuming this is an Auxiliary Boiler (not talking about composite boiler getting M/E exhaust gas) overpressurised scenario,…[Read more]

Q: How to visually tell non-return valve from other valves?

Non-return valves has a X on the top of the spindle.

Actual photos of Screw Down Non-Return valve for Bilge Well onboard.