When correctly secured with round turns on "H" bitts, the line will retain what percentage of its strength?

When a line is correctly secured with round turns on "H" bitts, it can maintain approximately 90 percent of its original strength. This is largely due to the way round turns distribute the load evenly across the bitts, reducing stress concentrations that could weaken the line.

Using round turns allows for a more secure hold on the line, minimizing slippage and thereby helping to maintain the integrity of the material under tension. This method is pivotal in marine applications where significant forces are often encountered, such as towing or mooring. Ensuring that the line retains this level of strength is crucial for safety and effective operation on the water, where a failure could lead to hazardous situations.

Other values such as 80, 70, or 60 percent do not accurately reflect the effectiveness of using round turns on bitts, as they suggest a significantly reduced capability that would not be typical for well-secured lines in maritime practices.