Submarines

Some articles on submarines, submarine:

HMCS Windsor - Operational History - Transfer
... offered to sell Unicorn and her sister submarines to Canada in 1993 ... standards), with the lease to run for eight years after this, the submarines would be sold for £1 ... Problems were discovered with the piping welds on all four submarines, which delayed the reactivation of Unicorn and her three sisters ...
Amur Class Submarine
... The Amur class submarine (named for the Amur River), is one of the latest Russian submarine class which are advertised as the export version of the Lada class, a highly improved ... The new vessel is the 4th generation submarine family with 2 models in it ... The sonar signature level of the submarines of this class is several times lower in comparison with “Kilo” class submarines ...
Rainbow Class Submarine
... The Rainbow class submarine or R class was a class of four submarines built for the Royal Navy in the early 1930s ... They were designed as long range patrol submarines for the Far East and were essentially repeats of the preceding Parthian class submarines with minor modifications ...
Ballast Tank - Submarines
... In submarines ballast tanks are used to allow the vessel to submerge, water being taken in to alter the vessel's buoyancy and allow the submarine to dive ... When the submarine surfaces, water is blown out from the tanks using compressed air, and the vessel becomes positively buoyant again, allowing it to rise to the surface ... A submarine may have several types of ballast tank the main ballast tanks, which are the main tanks used for diving and surfacing, and trimming tanks ...
Advanced SEAL Delivery System - Critical Design Challenges
... currently specified for fleet nuclear submarines ... No existing submarine equipment of any kind existed that survived the shock ... were limited by what could be carried on the back of a 688 class submarine ...