The NATO Submarine Rescue System (NSRS) is a tri-national project to develop an international submarine rescue system. The system provides a rescue capability primarily to the partner nations of France, Norway and the United Kingdom, but also to NATO and allied nations and to any submarine equipped with a suitable mating surface around its hatches.
NSRS was designed and manufactured by Forum Subsea Technologies (formerly Perry Slingsby Systems).
The NSRS entered service in 2008, replacing the UK's previous rescue system, the LR5. The complete system is fully air transportable in a variety of suitable aircraft (C17/C5/An124/A400M). It is capable of launch and recovery in a significant wave height of up to 5 meters (sea state 6) and can reach any distressed submarine (DISSUB) in 72-96 hours from the alert, dependent upon location. It has limited capability in ice-covered seas.
On receipt of a 'SUBSUNK' alert that a submarine is in difficulties, the submarine operator will initiate the NSRS call-out procedure. The intervention system, which is centered upon an off-the-shelf remotely operated vehicle (ROV) will mobilise to the scene about 24 hours in advance of the full rescue system. Once on-site it will locate the distressed submarine (DISSUB), establish communications, conduct damage assessment and prepare the DISSUB for rescue operations.
The Submarine Rescue Vehicle (SRV) along with a portable launch and recovery system (PLARS), support and operating equipment and the hyperbaric treatment complex (known as the Transfer Under Pressure (TUP) equipment) will arrive approximately 24 hours later. All equipment and personnel will be flown to the mobilisation port for embarkation on a suitable mother ship. The embarkation will take less than 18 hours and the mother ship will then sail to the scene where the SRV will be launched. The aim is to achieve time-to-first-rescue of 72 hours, with personnel being brought to the surface in groups of 12, and transferring them to the NSRS hyperbaric treatment facility if necessary.
The NSRS is based at HM Naval Base Clyde in the UK.
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