How many plugs are required for each hole in a lifeboat when automatic closure devices are not used?

The requirement for two plugs for each hole in a lifeboat when automatic closure devices are not used is rooted in safety protocols aimed at ensuring the vessel remains buoyant and functional during emergencies. Having two plugs provides a redundancy that helps secure the lifeboat against potential leaks or breaches that could occur.

In the absence of automatic closure devices, relying on just one plug could lead to vulnerabilities in the lifeboat's integrity, especially if that plug were to fail or become dislodged. Two plugs create a more robust defense against water infiltration, ensuring that the lifeboat maintains its intended purpose as a safe means of escape. This is particularly crucial in situations where the lifeboat may be subjected to rough seas or other challenging conditions that could threaten its safety.

This requirement aligns with international maritime safety standards, which emphasize the importance of preventing water ingress into lifeboats, thereby enhancing survival chances in emergency situations. The dual plug placement is a proactive measure to bolster the vessel's overall safety mechanisms.