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At depths below periscope depth submarines determine their position using: Dead reckoning course information obtained from the ship's gyrocompass , measured speed and estimates of local ocean currents, this could also be considered an estimated position as long as the ocean current is computed in.
The mechanical systems of submarine periscopes typically use hydraulics and need to be quite sturdy to withstand the drag through water. The periscope chassis may also support a radio or radar antenna. Submarines traditionally had two periscopes; a navigation or observation periscope and a targeting, or commander's, periscope.
Sea Wolf is an arcade video game designed by Dave Nutting and released by Midway in 1976. [3] It is a video game update of an electro-mechanical Midway game, Sea Devil, [4] itself based on Sega's 1966 electro-mechanical arcade submarine simulator Periscope. [5]
Also, "periscope feather" (the wave created by the snorkel or periscope moving through the water) can be spotted in calm seas. During the early months of the Battle of the Atlantic in World War II, British ships using the radar set Model 271 were able to detect the periscope of a submerged submarine at a distance of 800 m (0.50 mi) during tests ...
Sailors aboard the high-tech submarine will use the Xbox controller to maneuver its periscope. See, unlike periscopes in movies, wherein a single person has to peer through an eyepiece, the high ...
A photonics mast aboard a Virginia-class submarine. A photonics mast (or optronics mast [1]) is a sensor on a submarine which functions similarly to a periscope without requiring a periscope tube, thus freeing design space during construction and limiting risks of water leakage in the event of damage.
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Thales Optronics Limited has its headquarters and main production facility in Glasgow, Scotland, where it employs around 630 people. [7] Its principal activity is the design, development and manufacture of infra-red cameras, laser range-finders, and cameras for use in airborne reconnaissance systems, armoured vehicle sighting systems, submarine periscopes and target locators.