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";s:4:"text";s:3543:"Wiki User November 19, 2013 12:02AM. they use a light built into their models. How does a submarine dive and resurface? Answer. “The problem is that the craft has still got to be slightly denser than water to submerge.” Hawkes, however, does not see this as a problem. The adaptations and inventions that allow sailors to not only… You’ll be glad to know, that your search for tips for CodyCross game is ending right on this page. Not so long ago, a naval force worked entirely above the water; with the addition of the s­ubmarine to the standard naval arsenal, the world below the surface became a battleground as well. However, if the observer is not looking at the horizon, but at celestial objects, then the distance can be measured in light years, not nautical miles. Asked in Submarines How do submarines … World War II German U-boats generally had collapse depths in the range of 200 to 280 metres (660 to 920 feet). Answer. Not so long ago, a naval force worked entirely above the water; with the addition of the s­ubmarine to the standard naval arsenal, the world below the surface became a battleground as well. Here are all the Device used in submarines to see above water answers. That is why this website is made for – to provide you help with CodyCross Device used in submarines to see above water answers.It also has additional information like tips, useful tricks, cheats, etc. The hull of the ships won’t be visible until about 5 miles. The key words being "above water". ­A submarine or a ship can float because the weight of water that it displaces is equal to the­ weight of the ship. Submarines are incredible pieces of technology. What exactly do submarines do on patrol, anyway? How do people on a submarine see what is on the surface of the water? USS Birmingham - Surfacing in style Submarines are incredible pieces of technology. Because there are two big advantages like- submarines are harder to detect or search and harder to sink in comparison to surface ships. If the submarine is at periscope depth, and the observer is looking for ships on the horizon, he/she will start to see masts at about 7 or 8 nautical miles. This displacement of water creates an upward force called the buoyant force and acts opposite to gravity, which would pull the ship down. Researchers are now working on a 'virtual periscope' which would let a submarine view above surface from under the water. CodyCross is an addictive game developed by Fanatee. Related Questions. Modern nuclear attack submarines like the American Seawolf class are estimated to have a test depth of 490 m (1,600 ft), which would imply (see above) a collapse depth of 730 m (2,400 ft). They use a periscope. Some of the worlds are: Planet Earth, Under The Sea, Inventions, Seasons, ...Continue reading ‘Device used in submarines to see above water’ » Each world has more than 20 groups with 5 puzzles each. Ask for details ; Follow Report by Mehak2924 02.01.2019 Log in to add a comment A key give-away of a submarine is its periscope which rises out of the water's surface in order to keep an eye on the enemy. See the related link for more information. Before we discuss how submarines break the surface and go underwater, let’s do a quick recap of an important physical phenomenon of water that you surely studied at some point in a science class: buoyancy. Still the drag of water is much higher than drag of air, so any boat-plane (underwater missiles able to launch into space) could beat submarines in a raw speed comparison. 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