Your examiner asks: "Does every portable fire extinguisher on board get hydrostatically tested at the same interval, regardless of type — CO2, dry powder, foam?"

A. No — the hydrostatic (or extended service) test interval is not a single blanket figure across all extinguisher types; it depends on the extinguisher's CONSTRUCTION and pressurisation method. PERMANENTLY PRESSURISED extinguishers (where the extinguishing agent and propellant gas share the same cylinder at all times, typical of many CO2 and stored-pressure dry powder/foam/water types) are generally tested at a longer defined maximum interval. NON-PERMANENTLY PRESSURISED types (such as cartridge-operated extinguishers, where the propellant is only released into the main body on activation) are typically tested when found to be rusty or showing other signs of deterioration, in addition to a defined maximum interval. The practical point for the OOW is that the extinguisher's TYPE PLATE / manufacturer documentation, not a single memorised number applied to every extinguisher on board, is the authoritative reference for that specific unit's due test date.

B. All extinguisher types — CO2, dry powder, foam, and water — share an identical hydrostatic test interval with no variation based on construction or pressurisation method.

C. Cartridge-operated (non-permanently pressurised) extinguishers never require hydrostatic testing under any circumstances, regardless of their condition.

D. The hydrostatic test interval is determined solely by the extinguisher's colour coding (red body with a coloured band) rather than by its pressurisation method or construction.

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