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Submarine Rescue Exercise at RIMPAC 160713-N-GW536-005.jpg
An LR-7 being retrieved by The Chinese navy submarine rescue ship Changdao off the coast of Hawaii during RIMPAC 2016
 People's Liberation Army Navy
Name: LR7 DSRV
Ordered: 1
Awarded: 1
Builder: Perry Slingsby Systems
Sponsored by: PLAN
Completed: 2009
Commissioned: 2009
Status: In active service
General characteristics
Type: Deep-submergence rescue vehicle
Length: 25 ft (7.6 m)
Installed power: Battery
Propulsion: electrical
Endurance: 4 days
Test depth: 300 m (980 ft)
Sensors and
processing systems:

The LR7 is a manned submersible undersea rescue vehicle in service with the People's Liberation Army Navy (PLAN) since 2009, and is usually deployed onboard one of China's Type 926 submarine support ships. Constructed by the British firm Perry Slingsby Systems, of the Triton Group, as a development of earlier LR5, the 25 ft long LR7 is designed for retrieving sailors from stranded submarines at a depth greater than 300 meters, and is capable of rescuing 18 at a time.[1]


  1. ^ "LR7" (PDF). Archived from the original (PDF) on 2016-04-04. Retrieved 2015-07-23.