What is the recommended length for a buoyant heaving line?

The recommended length for a buoyant heaving line is 15 meters because this length provides a good balance between being long enough to reach a person in the water and manageable enough to handle effectively. A 15-meter line allows for a reasonable reach from a boat to someone in distress, accommodating various scenarios such as waves or current that may necessitate extra distance. It also ensures that the line is not excessively cumbersome, which could hinder quick deployment during an emergency.

The other lengths, while they may still serve in certain situations, either do not provide sufficient distance or could be unwieldy for quick use. A buoyant heaving line must strike the right balance of usability and reach to be effective in rescue operations.