JFD Adapts ROKN Rescue Sub For Moonpool Launch System
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Submarine rescue specialist JFD, in conjunction with Hanwha Ocean, has helped the Republic of Korea Navy (ROKN) enhance its undersea recovery capabilities by enabling its SRV to be launched and recovered via a moonpool system.
As per a recent press statement, the firm has successfully achieved integration and acceptance of a moonpool launch and recovery system (LARS) for its Submarine Rescue Vehicle (SRV) on a ROKN rescue vessel.
A moonpool, also known as a wet porch, is an enclosed opening in the base of a ship’s hull affording access to the water below. Open moonpools don't flood because the sides extend well above the waterline of the vessel, preventing water from entering. Other variants used pressurised rooms to prevent water ingress.
The JFD system delivered to the ROKN forms part of the company’s contract with Hanwha Ocean to deliver the capability. After completing trials at JFD’s factory in Glasgow, Scotland, the next step was modifying the SRV to allow moonpool launch and recovery, rather than via the traditional over-stern or over-side method.
The advantages of a moonpool include helping to shelter the SRV from rough sea conditions that might otherwise make launching difficult or impossible. It also removes sea ice as a potential obstacle.
As per the JFD press statement, adaptations made to the SRV to facilitate a moonpool LARS included bespoke hydraulic latching systems to accurately secure the rescue sub, as well as control system enhancements for increased subsea manoeuvring precision when returning to its cradle.
It noted: “The inclusion of a moonpool design mitigates operational risks in challenging sea states, directly addressing the unique challenges of South Korea’s coastal waters.”
JFD Managing Director Rob Hales commented: “This collaboration has drawn on the world-class expertise of Hanwha Ocean and JFD to deliver an innovative solution to enhance submariner safety and operational readiness.”
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You can read more details on the JFD website