Preventer bars are fitted on lifeboat releasing gear to prevent what from happening?
• Lifeboat on-load/off-load release gear and how it works • The purpose of a preventer bar/safety pin in mechanical releasing systems • Difference between falls unhooking vs. hooking/unhooking the boat itself
• Think about what could go wrong if the releasing gear is moved or jarred unexpectedly while the lifeboat is still hanging in the falls. • Which option best describes a protection against a dangerous accidental situation, rather than a normal step in the launch sequence? • Ask yourself: does the preventer bar mainly protect the people in the boat from falling, or does it mainly control when the normal operation is allowed to start?
• Identify whether the preventer bar acts on the hooks/falls or on the release lever/operating mechanism. • Check which options describe preventing accidental behavior versus controlling normal procedures once the boat is already waterborne. • Verify in current SOLAS / LSA Code guidance how on-load release gear is secured against accidental operation before the correct conditions are met.
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