How much of the boat crew's body weight can monkey lines hold?

The correct answer indicates that monkey lines can safely hold up to 75% of a boat crew member's body weight. This is significant because it ensures that while crew members use these lines for assistance during boarding or disembarking, there is still an appropriate safety margin. By allowing for a maximum of 75%, it provides enough support for most of the crew’s weight without entirely relying on the lines, which is essential for preventing accidents or failure of the lines under excessive weight or dynamic loads.

This standard helps to maintain safety protocols and minimize the risk of injury during operations. Crew members are trained to understand their physical limits and the equipment they are using, reinforcing the importance of adhering to these weight restrictions while performing their duties on board.