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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.
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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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]
The current photonics masts have a visual appearance so different from ordinary periscopes that when the submarine is detected, it can be distinctly identified as a Virginia-class vessel. As a result, current photonic masts will be replaced with Low-Profile Photonics Masts (LPPM) which resemble traditional submarine periscopes more closely. [52]
The hunt for the missing Titanic submersible is “still an active search and rescue” mission, the operation leader has said. Rear Admiral John Mauger said his team are using remote equipment to ...
Sail of the French nuclear submarine Casabianca showing the diving planes, camouflaged masts, periscope, electronic warfare masts, door and windows.. In naval parlance, the sail (American usage) or fin (British/Commonwealth usage) (also known as a fairwater) of a submarine is the tower-like structure found on the dorsal (topside) surface of submarines.