PSCRB Exit Exam • Set 1 Question 4 of 30
If the hydrostatic release mechanism for an inflatable life raft is not periodically serviced and becomes inoperative, it will NOT
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Direct Answer
Option A: free the life raft from a sinking vessel
The hydrostatic release unit (HRU) is designed to release the painter line of a liferaft when submerged to a specific depth (usually 1.5–4 meters). If inoperative, it will not free the liferaft from the sinking vessel.
All Options
A
free the life raft from a sinking vessel
(Correct Answer)
B
release the dye-maker for the life raft
C
set the water lights on immersion
D
break the seal on the carbon dioxide cylinder
Detailed Explanation & Context
The hydrostatic release unit (HRU) is designed to release the painter line of a liferaft when submerged to a specific depth (usually 1.5–4 meters). If inoperative, it will not free the liferaft from the sinking vessel.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Proficiency in Survival Craft and Rescue Boats (PSCRB).
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