PST Exit Exam • Set 5 Question 23 of 30
The function of a hydrostatic release unit (HRU) is:
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Direct Answer
Option A: To automatically unhook the lashing and release the life raft when the ship sinks
A Hydrostatic Release Unit (HRU) is a pressure-sensitive device that automatically releases the life raft's lashing when submerged to a depth of 1.5 to 4 meters, allowing the raft to float free as the ship sinks.
All Options
A
To automatically unhook the lashing and release the life raft when the ship sinks
(Correct Answer)
B
To launch the lifeboat manually
C
To pump water out of the life raft
D
To measure the depth of the sea
Detailed Explanation & Context
A Hydrostatic Release Unit (HRU) is a pressure-sensitive device that automatically releases the life raft's lashing when submerged to a depth of 1.5 to 4 meters, allowing the raft to float free as the ship sinks.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Personal Survival Techniques (PST).
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