A retractable dive line apparatus can be held in the hand or clipped onto diving equipment. One end of the line can be clipped onto a dive flag or buoy at the surface and will let out or retract line as necessary.
RETRACTABLE DIVE LINE
31.01.2019
Patent
Elektronische Ressource
Englisch
Dive, Dive, Dive - Submarines at war; by M. GUNTON
British Library Online Contents | 2005
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