https://peertube.dngr.us/videos/watch/0b6c9d7b-cdea-49ba-936d-fc1769e5555b Join this channel to get access to perks: https://www.youtube.com/channel/UCddem5RlB3bQe99wyY49g0g/join Want to learn more about Periscope Film and get access to exclusive swag? Join us on Patreon. Visit https://www.patreon.com/PeriscopeFilm Visit our website www.PeriscopeFilm.com "Loose Water Instability, Pt. 2; In Spaces Open to the Sea" is one of a series of U.S. Navy damage control training films designed to show Navy personnel the physical effects of flooded compartments in a vessel at sea. The WW2 era film includes various detailed animations and demonstrations using models to explain the effects of flooded compartments, with a discussion of various factors affecting stability, angles of heel, and free surface and free communication effect. The first example shows a hole blown in the hull of a transport ship such as might have been made by a torpedo (:37). Water floods the interior (:41). Center of gravity on objects submerged in water is explained (:58). Effects of a hole that allows flooding into one of the compartments, creating a loss of balance (1:13) and the resurfacing effect. An intact model is used in experiment with weights set into each compartment (2:07). The model is tilted to a 7.5 degree angle (2:25). Liquids are used as replacement for solid weight (2:39). The model is tilted and water moves from the other side (3:42). Height loss is calculated (5:18). More water enters the compartment (5:54). The model inclines in the opposite direction shifting water flow (6:13). Lines of gravity are extended (6:56). Loss is calculated (7:27) accounting for free surface. Another compartment is shown, twice as long (7:59). Width is doubled (8:25). Additional loss is accounted for following the shift (10:47). The free communication effect is explained (10:51). The free surface effect and free communication effect are discussed (11:20). Charts relay reduction of the righting arm due to the fire surface effect (12:19). Loss is calculated (12:32) for each writing arm. Pocketing is discussed (12:40). Animations show what happens when the shell of the ship is torn open (13:22) while out at sea. Ship hands work to patch up a hole in the hull in re-enactment of an emergency (14:05); the water rises to waist height. A sailor carries a wounded comrade over his shoulder (14:13). The U.S. Navy seal (14:19).  Motion picture films don't last forever; many have already been lost or destroyed. For almost two decades, we've worked to collect, scan and preserve the world as it was captured on 35mm, 16mm and 8mm movies -- including home movies, industrial films, and other non-fiction. If you have endangered films you'd like to have scanned, or wish to donate celluloid to Periscope Film so that we can share them with the world, we'd love to hear from you. Contact us via the weblink below. This film is part of the Periscope Film LLC archive, one of the largest historic military, transportation, and aviation stock footage collections in the USA. Entirely film backed, this material is available for licensing in 24p HD, 2k and 4k. For more information visit http://www.PeriscopeFilm.com Source: https://www.youtube.com/watch?v=t6pn9kbuq6o Mirrored from Periscope Film (https://www.youtube.com/@PeriscopeFilm) Sat, 13 Jun 2026 13:29:04 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://peertube.dngr.us https://peertube.dngr.us/lazy-static/avatars/41a6fee9-7f57-42d0-a5fc-5db4f1af2e31.png https://peertube.dngr.us/videos/watch/0b6c9d7b-cdea-49ba-936d-fc1769e5555b All rights reserved, unless otherwise specified in the terms specified at https://peertube.dngr.us/about and potential licenses granted by each content's rightholder.