Kongsberg Heavy replenishment at sea (6te)

The all-electric HRAS replenishment system represents the next generation in abeam RAS technology and has been designed from the ground up for ease of use, maximum reliability, minimum through life cost, fast switch-on time and maximum availability. Kongsberg Maritime has developed and fully tested a heavy replenishment at sea (HRAS) delivery system. The all-electric HRAS replenishment system represents the next generation in abeam RAS technology and has been designed from the ground up for ease of use, maximum reliability, minimum through life cost, fast switch-on time and maximum availability. The HRAS system was designed in order to provide dynamic load transfer capability for the future Solids Supply vessels. A prototype was constructed at HMS Raleigh Royal Naval Training Facility to derisk the design before full production took place. The land based trials allowed critical assessment of the HRAS rig to test its dynamic response and load transfer stability in worst case sea state 5 conditions, even when at adverse vessel encounter headings. To our knowledge, no other high capacity replenishment at sea system has been dynamically tested and derisked to the same comprehensive extent worldwide. Successful demonstration of the Kongsberg Maritime HRAS system was concluded in September 2014 and it was deemed that the HRAS equipment met the advanced military equipment demonstration criteria of Technology Readiness Level (TRL) 6, which is defined as ‘successful demonstration in a representative environment’. The HRAS system comprises of a single heavy Jackstay wire which is held in constant tension to support the weight of the load. The load rolls over the Jackstay wire running on a two sheave traveller assembly which is pulled in either direction by the Inhaul and Outhaul wires. The traveller assembly has been specially designed to keep the profile of the projecting steel wire ropes as low as possible when it enters the RAS reception area inside the receiving vessel RA