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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.
Antenna masts and antenna-equipped periscopes can be raised to obtain navigational signals but in areas of heavy surveillance, only for a few seconds or minutes; [1] current radar technology can detect even a slender periscope while submarine shadows may be plainly visible from the air.
Virtual periscope is a system that allows submerged submarines to observe the surface above them without having to come to a shallower depth, as is required by traditional periscopes. The system, described in a patent as "Virtual Periscope", [1] was tested in 2005 aboard USS Chicago (SSN-721). It employed a small camera mounted on the sail of ...
See, unlike periscopes in movies, wherein a single person has to peer through an eyepiece, the high-tech version of the instrument uses high-resolution cameras and displays images on big screens.
Replacing some of the Challenger-class submarine, upgraded in 2016 till 2019, which includes optronic periscopes, combat management systems, sonars, countermeasure systems, digital data-links and attack capabilities which also allows the firing of new torpedoes and anti-ship missiles. [7]
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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Ocean Exploration Trust’s E/V Nautilus crew recently shared visuals it captured during its exploration of the USS Bugara, a sunken submarine used in World War II, the Korean War, and the Vietnam ...