Your examiner asks: "Beyond the general point that a quick visual check does not replace a proper service, what are the actual THREE tiers of portable fire extinguisher maintenance, and roughly how often does each occur?"

A. There are three distinct tiers: (1) ROUTINE VISUAL/WEIGHT CHECKS — frequent (commonly monthly or as part of routine rounds), checking the extinguisher is in place, the pressure gauge (where fitted) reads in the operable range, the seal/pin is intact, and there is no obvious physical damage or corrosion; (2) FORMAL ANNUAL SERVICE — at intervals not exceeding one year, by a competent person (which may be a suitably trained ship's officer such as the chief officer or second engineer, or a shore service technician), involving a more thorough examination of the extinguisher's condition and mechanism; (3) EXTENDED/HYDROSTATIC PRESSURE TEST — a much longer-interval test (the specific interval depends on extinguisher type and construction, but is commonly cited in the region of 10 years for many permanently-pressurised types, with some designs requiring earlier testing if signs of corrosion or damage are found) in which the extinguisher body itself is pressure-tested to confirm it can still safely hold pressure — this is fundamentally different from the annual service, testing the physical integrity of the cylinder rather than just the operating mechanism and charge.

B. There are only two tiers, visual check and hydrostatic test, with no separate formal annual service requirement at all under the FSS Code or MSC.1/Circ.1318.

C. The hydrostatic pressure test and the routine visual check are the same procedure performed at the same interval, with no distinction in scope or frequency.

D. The formal annual service may always be validly replaced by a routine visual/weight check performed by any crew member, with no distinction in competence or depth required.

A. Nothing — a test lift can proceed immediately after repairs

B. Testing should wait until cargo operations begin

C. The area within the grab's swing radius should be cleared of personnel before the lift

D. Only the crane operator needs to be aware the lift is happening

A. Who must remain clear of the exclusion zone while the lift takes place

B. The lunch schedule for the deck team

C. Only the weather forecast for the next watch

D. The cargo manifest for the next port