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Line holder
A line holder is an H-shaped piece of wood, plastic or stainless steel used to wrap a small rope such as a line. ==Usage== It is usually used in conjunction with a surface marker buoy or a delayed surface marker buoy by divers. In this case negative buoyancy is important in order to safely unwind the line underwater: * the scuba diver can drop the line holder and wait from a safe distance for the partial or complete unwinding; * a negative buoyancy line holder will greatly reduce the risk of losing it.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Line holder」の詳細全文を読む
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