taffrail log in Russian
taffrail log in Russian
вертушечный лаг
(nautical) A mechanical device dragged from the stern of the vessel that indicates the vessel's speed through the water; usually consists of a propeller, a reading unit and a stiff line connecting them.
гакабортный буксируемый лаг
(nautical) A mechanical device dragged from the stern of the vessel that indicates the vessel's speed through the water; usually consists of a propeller, a reading unit and a stiff line connecting them.