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In 2000, it set a world record of 11,883 t by lifting Shell's Shearwater topsides, beaten by Saipem 7000 in 2004 with the Sabratha deck lifting of 12,150 t. [5] In 2004, it installed the topsides on BP's Holstein, at the time the world's largest spar. The lift was a record for the Gulf of Mexico: 7,810 t.
The Hermod had two cranes at the stern. Originally the starboard-side crane was rated at 3,000 short tons (2,700 t) and the port-side at 2,000 short tons (1,800 t). [4] In 1984, the lifting capacities were upgraded to 5,000 and 4,000 short tons (4,500 and 3,600 t) respectively. [1] The main hoist could lift 92 m (302 ft) above the work deck.
After straddling the payload, Pioneering Spirit takes on ballast to lower, and two sets of eight (one set per bow) retractable motion-compensated horizontal lifting beams are extended under the payload. Once the load is secure, the vessel offloads the ballast, rising in the water and partially transferring the load to the beams.
The Guinness World Records state that Taisun holds the world record for "heaviest weight lifted by crane", set on April 18, 2008 at 20,133 metric tonnes (44,385,667.25 lb) by lifting a barge, ballasted with water. [3] However, it was surpassed by the Honghai Crane when the new crane was completed in 2014, with a lift capacity at 22,000 tonnes. [5]
The class is based on a frigate-like design, but built with an internal multipurpose deck (flex deck) and a stern vehicle ramp.The ships can serve as command platforms for a staff of 75 persons (naval or joint staff) with a containerized command and control centre, transport and base of operations for a company-sized landing force of some 200 soldiers with vehicles.
Primary, North American cranes (3) on starboard quarter, main deck and on port side, 02 level. Morgan Marine cranes (2), normally on foredeck and at other locations to suit mission. Fritz-Culver A-frame at stern, retractable hydroboom on starboard side by staging bay door. Blue Extension crane on starboard 01 aft of rescue boat davit.
The ship mounted a retractable crane on the starboard side of the flight deck, just aft of the rear elevator. [6] The ship's air group was originally intended to consist of 12 Mitsubishi A6M Zero fighters, plus three in storage, 27 Aichi D3A Val dive bombers, plus three in reserve, and 18 Nakajima B5N "Kate" torpedo bombers (plus two in crates).
The two main port and starboard cranes were installed by August 2018. [26] The vessel was christened SSCV Sleipnir by Mrs. Maha Hatfield on May 24, 2019, and embarked on sea trials and crane load tests afterwards. [27] Sea trials were completed in late June 2019. [11]