Jurong Shipyard Skids Hull in Rig Construction

Thursday, June 26, 2003
Jurong Shipyard Pte Ltd (JSPL), a subsidiary of SembCorp Marine Ltd has skidded the massive 14,000 ton upper hull of a $285 million semi-submersible rig over the lower hull. It is reportedly the first of its kind involving the skidding of such a heavy structure. It was conceived, designed and constructed over a two-year period. On April 11, 2001, JSPL in collaboration with associated company PPL Shipyard Pte Ltd (PPL) entered into a fixed price agreement with GlobalSanteFe Corporation (GSF) for the construction of two units of Friede & Goldman ExD designed deepwater semi-submersible drilling rigs. Valued at $285 million each, inclusive of equipment, project management and other services furnished by client, the agreement also covers options to build two additional units of semi-submersible to be exercised at specific dates. The scope of work entails furnishing labor and materials to design, construct, equip, complete, test and deliver afloat to GSF these drilling units. JSPL designed and embarked on a construction methodology in which the upper and lower hulls were built simultaneously in two halves, a departure from the traditional method of installation by small sub-blocks onto the lower hull while afloat using floating cranes. Weighing approximately 14,000 tons, the upper hull, measuring 8.6 metres in height and 75 metres in length and width, was built on land that was reinforced to take the substantial load. The upper hull was then fully outfitted with installations, including a drilling tower. The lower hulls, consisting of two pairs of pontoons and columns, were built separately in JSPL’s No. 5 Drydock and subsequently shifted into position in the No. 3 ULCC Drydock prior to the skidding and mating operations. This Drydock measures 380 metres in length, 80.2 metres in width and 14 metres in depth. During the skidding process, the upper hull, which was constructed on land over the skid truss, was connected to 12 skid shoes. The keel blocks and supporting truss were then laid on the ULCC Drydock. The skidding beam on which the upper hull was skidded on had a length of 188 metres, inclusive of land and drydock area. Upon satisfying the regulatory requirements, the upper hull was then pulled by four computer-controlled hydraulic-operated strand jacks. The whole process took 11 hours to complete and was well within the planned schedule. Scheduled for delivery in the first quarter of 2004, the accomplished engineering feat has placed Jurong Shipyard in the league of the world’s new rig building yard.
Maritime Reporter July 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Shipbuilding

Carrier for Kansai Electric Power Named LNG FUKUROKUJU

Mitsui O.S.K. Lines, Ltd. today took part in a naming ceremony for the newbuilding liquefied natural gas carrier LNG FUKUROKUJU, which is co-owned by MOL and Kansai Electric Power Co.

AAM, UNH in Vessel Design, Construction Pact

All American Marine, Inc.(AAM) together with the University of New Hampshire (UNH) are pleased to announce a contract for the design and construction of a new aluminum catamaran research vessel.

Korean Shipyards in Troubled Water

Struggling with technology and a plunge in oil prices that has discouraged exploration, Korean vessel makers are racking up debt and could show billions of dollars in losses, reports Bloomberg.

Navy

China's Navy Drills in South China Sea

China said it conducted air and sea drills in the South China Sea on Tuesday as it stakes an increasingly assertive claim to virtually the whole sea despite rival claims by neighbours.

Wrecked 'Russian Submarine' Found in Swedish Waters

A wrecked mini-submarine was found last week in waters off of Sweden’s eastern coast.   Authorities believe it is a Russian model, primarily because of Cyrillic letters on the hull.

Chinese Navy Plays Down S. China Sea Exercises

The Chinese navy played down recent military drills in the South China Sea and criticised other countries for "illegally" occupying islands in the area, the

 
 
Maritime Security Maritime Standards Navigation Pipelines Pod Propulsion Salvage Ship Simulators Shipbuilding / Vessel Construction Sonar Winch
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.3217 sec (3 req/sec)