Which feature must be present to ensure the boat is waterborne before release activation occurs in on-load release systems?

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Multiple Choice

Which feature must be present to ensure the boat is waterborne before release activation occurs in on-load release systems?

The feature being tested is hydrostatic interlock. It works automatically by sensing water pressure to confirm the release unit is submerged before any activation can occur. This ensures the liferaft won’t release while still on deck or in the air, preventing premature deployment and making sure the raft can inflate properly once in the water. Other options don’t provide this automatic water-immersion check: a mechanical latch just holds parts together but doesn’t verify immersion; a manual switch requires someone to act and could be used on land; a safety pin prevents accidental release but doesn’t ensure the unit is in the water.

The feature being tested is hydrostatic interlock. It works automatically by sensing water pressure to confirm the release unit is submerged before any activation can occur. This ensures the liferaft won’t release while still on deck or in the air, preventing premature deployment and making sure the raft can inflate properly once in the water. Other options don’t provide this automatic water-immersion check: a mechanical latch just holds parts together but doesn’t verify immersion; a manual switch requires someone to act and could be used on land; a safety pin prevents accidental release but doesn’t ensure the unit is in the water.

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