OCEAN SAFETY THROWING LINE Throwing Line Holder Allowing increased accuracy in any under and over arm heaving line throw, this sock like package also provides a compact way to store 30metres of buoyant line on-board. Available with or without a bracket, the design allows easy repacking. The Ocean Safety Throw Line is designed for use in rescue situations at sea or in any waterway. Allowing for increased accuracy in any under / over arm heaving line throw, this sock line package also provides a compact way to store 36 metres of buoyant line onboard. Available with or without a bracket and designed to allow easy repacking.