Hyperbaric Retrieval Vehicle (HRV)

A Hyperbaric Retrieval Vehicle (HRV), also known as a Hyperbaric Rescue Vessel (HRV) or Hyperbaric Lifeboat, is a self-propelled, pressurized capsule designed to evacuate saturation divers from offshore locations during emergencies, providing life support for up to 72 hours until the divers can be safely transported and decompressed. These vehicles are critical for diver safety in remote oil and gas operations, as they can be launched from a diving support vessel and then recovered onto a rescue vessel or the support vessel itself. 
Key Characteristics and Function

• Purpose: 
  To safely retrieve and sustain saturation divers under pressure in the event of an emergency. 
• Life Support: 
  Equipped with life support systems to provide a breathable atmosphere and maintain pressure for the divers inside. 
• Mobility: 
  Can be self-propelled Self-Propelled Hyperbaric Lifeboats (SPHLs) or towed and launched. 
• Emergency Recovery: 
  A dedicated rescue and recovery vessel (RRV) may be needed to retrieve the HRV, particularly in remote or severe offshore conditions. 
• Transport to Decompression: 
  Once on a stable platform, the HRV is transported to facilities where the divers can undergo safe decompression. 
• Resilience: 
  Designed to function in harsh, remote environments and is capable of maintaining stability and life support during recovery.