LIFEBOATS UNDER GRAVITY DAVITS - RECOVERING BOATS
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Shows the method of launching the Merchant Marine type of nested life-boats using the 'Welin Gravity Davit.' Demonstrates methods of launching at dockside and while underway at sea.
Sources
- usgov-av-1974 — title, year, creator, length, color, sound, description
Record added 2026-07-01 03:45:53