Question 1

True or False: Under the IMO resolution now in force (MSC.581(110), effective 3 December 2025), a connected space should be treated as containing a hazardous atmosphere until testing proves otherwise — regardless of whether it is naturally ventilated.

Accepted Answer

True This is the exact regulatory gap the Federal Indiana investigation exposed under the previous resolution (A.1050(27)), which only classed a space as an 'adjacent connected space' if it was normally unventilated — meaning a naturally ventilated space fell outside the definition entirely. MSC.581(110), now in force, closes that loophole: any space connected to a potential source of hazardous atmosphere is presumed dangerous until proven otherwise, ventilation or not.

Question 2

You're asked to test a deck crane grab after electrical repairs nearby. As the grab is hoisted, what should have happened first?

Accepted Answer

The area within the grab's swing radius should be cleared of personnel before the lift On the bulk carrier Fairfield Eagle, a crew member working nearby was struck and fatally injured when a grab being test-lifted after repairs swung unexpectedly. The investigation found the area should have been cleared and barriered before the test lift began.

Question 3

A toolbox talk held before a lifting operation should explicitly cover which of the following?

Accepted Answer

Who must remain clear of the exclusion zone while the lift takes place A toolbox talk exists to make sure everyone present understands the danger zones, the abort signal, and — critically — who must not be in the area while the lift happens. The RMIMA investigation into the Fairfield Eagle fatality found the toolbox talk had not made this clear.