Lifeboats & Liferafts Practice Questions

1. A hydrostatic release unit (HRU) on an inflatable liferaft is designed to automatically release the liferaft when the vessel sinks to a depth of approximately:

• A.0.5 to 1 metre
• B.1.5 to 4 metres✓
• C.6 to 8 metres
• D.10 to 15 metres

Why: The HRU is designed to release the liferaft container from its securing straps when submerged to approximately 1.5 to 4 metres, allowing the liferaft to float free and inflate as the vessel sinks.

2. Which of the following items is NOT required to be included in a SOLAS 'A' pack for an inflatable liferaft?

• A.Thermal protective aids
• B.Graduated drinking vessel
• C.Radar reflector
• D.Portable fire extinguisher✓

Why: SOLAS 'A' pack contents include survival items such as thermal protective aids, drinking vessels, signaling equipment, and first aid supplies. A portable fire extinguisher is not part of the SOLAS liferaft pack; fire extinguishers are required on lifeboats.

3. Under 46 CFR, inflatable liferafts on inspected vessels must be serviced at an approved service facility at intervals not exceeding:

• A.6 months
• B.1 year✓
• C.2 years
• D.5 years

Why: 46 CFR requires inflatable liferafts to be serviced annually at a facility approved by the manufacturer and/or the USCG. Regular servicing ensures gas cylinders are charged, fabric integrity is sound, and pack contents are within expiration dates.

4. A totally enclosed motor-driven survival craft (TEMPSC) is distinguished from an open lifeboat primarily because it:

• A.Requires no fuel to operate
• B.Provides protection from fire and sea spray with a rigid canopy✓
• C.Is launched by a free-fall ramp only
• D.Carries twice the rated number of persons

Why: A TEMPSC (totally enclosed motor-driven survival craft) features a rigid, weathertight enclosure that protects occupants from fire exposure and severe weather. SOLAS requires these on tankers and certain other vessel types to protect crew during a fire or major casualty.

5. How many persons must a lifeboat on a cargo vessel be capable of carrying, as a minimum requirement on each side of the vessel under SOLAS?

• A.All persons aboard
• B.50% of total persons aboard on each side✓
• C.25% of total persons aboard on each side
• D.At least 6 persons

Why: SOLAS requires cargo ships to carry lifeboats on each side capable of holding 100% of persons aboard (i.e., each side carries 50% of the total complement), ensuring everyone can board from either side in the event one side is inaccessible.