Submarine Rescue Systems

Ensure the safety of your crew with Defense: SRVs, ROVs & UUVs

Forum Subsea Vehicles encompasses two of the best known brands in the design and build of remote intervention vehicles, namely Perry Systems and Sub-Atlantic. The vehicles business offers the subsea industry an extensive range of remotely operated vehicles from inspection, survey through to deepwater construction. In addition, Perry Systems also produce submersible systems, designed and built specifically for the military markets.

Perry Systems has a wealth of experience in the design, manufacture, testing / commissioning and operation of submersible vehicles. Since 1974, the company has produced over 450 manned and unmanned systems including rescue submersibles and ROVs with special purpose tooling. Technology has advanced remarkably since the production of the first ‘LR’ class submersible and today’s SRVs are built to free fly under battery power, and are capable of diving in depths of 600 meters to rescue up to 18 submarines per dive. The latest NATO submarine, which completed extensive sea trials in 2008, is on constant standby for rescue operation in any part of the world and is specifically packaged for rapid deployment by air transport with all other surface elements of NSRS. The rescue system has a normal operating depth which exceeds the survival depth of many full size submarines.

Sub-Atlantic has a long history of supplying ROV systems to the military market, ranging from small observation to light work class vehicles.

These may be deployed on a range of tasks including diver support, seabed survey, mine-countermeasures, port security, intruder detection, under hull search, munitions recovery, submarine rescue and a variety of other survey/search /recovery tasks. Our advanced control system, SubCAN allows for precise autopositioning, preprogrammed manoeuvres and ‘hands free’ station keeping in situations of strong and changing currents whilst also providing real time monitoring / feedback of sensors and components.

With a proven track record in the defense market, Perry Systems and Sub-Atlantic are proud to be the manufacturers of choice by many of the world’s military and naval forces, and they will continue to develop cutting edge technology which will keep them in the forefront of the subsea industry.

Whatever the mission, Forum subsea vehicles has a solution.

Rescue Vehicle (SRV)

The SRV is a manned submersible and was developed from previous rescue vehicles. It is operated by a three man crew and capable of rescuing 15 crew.

General characteristic:
  • 10m long
  • Weighs 29 tonnes
  • All steel, single piece hull
  • Capable of operating at depths of > 600 meters
  • Can mate with distressed submarine at angles of up to 60 degrees

Much of the technology developed by Perry Systems for oil and gas sector has been further developed for applications for the defense market, such as:

  • Intervention Class ROV (IROV) for locating and surveying distressed submarines (DISSUB) and delivering the emergency life-support stores (ELSS)
  • Deck located control rooms
  • Launch and recovery systems
  • Manipulator arms for torpedo recovery
  • Sticky foot


The Forum Perry® Emergency Life Support Stores (ELSS) containers are pressure tight pods used by Navies as part of a distressed submarine rescue system. In the event that a submarine becomes stranded on the sea bed, ELSS containers are posted into the submarine’s hatches to deliver life preserving stores to the crew until a full rescue can be mounted.

The ELSS pod is designed to be nominally 10 kg negatively buoyant in seawater, which enables it to be delivered to the Submarine by a swimmer, an Atmospheric Diving Suit (ADS), a Remotely Operated Vehicle (ROV) or the Rescue Submersible itself.

Each ELSS container comprises a cylindrical pressure vessel with a removable end cap fitted with a lifting handle. The payload of the container can be varied using a combination of ballast weights, which keep the weight in water of the container constant.

The cylindrical pressure vessel is manufactured from aluminium and coated with yellow Xylan, which is both tough and resilient to impact during deck handling and deployment.

The removable end cap is manufactured from aluminium alloy and is fitted with a stainless steel lifting handle. A pressure equalizing valve ensures that the cylinder is not under or over-pressurized before being opened.

The ELSS pod is fully compliant with NATO STANAG 1391 “Requirements of a distressed submarine for the receipt of Emergency Life Support Stores (ELSS) by pod posting”.

SRV Mating Target

FET’s submarine rescue system mating target is designed as a training aid for submersible operators.

  • The target is designed to be used at depths of up to 600 metres, and in currents up to 2.5 knots, with safe deployment up to a Sea State 4.
  • It weighs approximately 6,500 kg and has integrated lifting features allowing it to be deployed and retrieved from a ship mounted crane.
  • Under these operating conditions a soft and hard seal can be created between the SRV’s Dry Mating Skirt (DMS) and the Mating Target Disc.
  • The Target Disk angle is adjustable from 0° horizontal to 40°.
  • The Mating Target can be disassembled and stored in a standard 20ft shipping container with the leg extensions and lifting beams removed.
  • Fully pressure tested and load tested.
  • The Target Disk is painted with the ‘bullseye’ dimensions defined in NATO STANAG 1297 “Requirements for a NATO Common Rescue Seat” providing the SRV pilot enhanced visibility when mating.
SRV Mating Target