With the heightened expectations of stakeholders in the aftermath of the Deepwater Horizon incident, Hyundai Heavy Industries (HHI) has listened to its drilling operator clients and designed a new generation of drillship. The new 80k class, heavy duty, wide beam drillship design, HD12000, can drill up to depths of 12,000 feet.
It has greater versatility, strength and more available deck space than its predecessors and has been developed drawing on previous experience of drillships. The HD12000 has an increased beam, which allows for larger and more variable load capacity (up to 24,000 metric tonnes) and reserve buoyancy for heavy duty – with compartment arrangement improvements – as well as being able to accommodate a cylinder rig concept that could be used for bigger derrick load requirements.
The JDP put the wide beam drillship design through design review, ship motion analysis, fatigue and FE analysis. Throughout, and on a global basis, Lloyd’s Register experts in hull structures, marine, mechanical, electrical and drilling systems worked in co-operation with HHI’s lead engineers to review and give feedback on the design development.
At the closing meeting at HHI’s Ulsan shipyard, Gyung-Jin Ha, Executive Vice President, Hyundai Heavy Industries, commented: “HHI and Lloyd’s Register have strong advantages in their own specialised fields, and it is therefore desirable to share experiences with each other and have cooperation between the two companies. HHI will never stop innovating to meet new market demands.”
Lloyd’s Register Drilling Integrity Services specialists in Moduspec were able to provide 25 years of valuable ‘people, systems and equipment’ insight and perspective regarding the drilling systems arrangements, when considering the operational integrity of the proposed design. At 223 metres long, 40 metres wide and 18.5 metres deep, the HD12000 drillship can probe a depth of 40,000 feet below the rotary table and is designed to accommodate the increasing complexity, pressures and sizes of drilling equipment and their handling needs. In addition, the arrangement of mud pumps and riser hold storage inside the hull envelope provides for a large free deck area for tube storage and other equipment, as well as greater flexibility and versatility of operations.
It has fully dynamic, positioning-compliant, station-keeping capabilities, with sufficient power to allow it to maintain position in emergency situations. Efficient The HD12000’s innovative hull form design is based on HHI’s longstanding and accumulated technology on merchant vessels. It enables a high transit speed of 11.5 knots (reduced form resistance with integrated thruster pod to hull) with a reported 40% less fuel consumption, enhanced sea-keeping performance (reduced roll angle by 20%), reduced interaction and thruster efficiency improvement and enhanced DP capability (reportedly 20% less fuel consumption).
A patented thruster canister design allows for in-site inspection and maintenance of the thruster without the need for docking, with reduced non-productive time.
Alan Williams, Lloyd’s Register’s Korea Marine Operations Manager, said: “Lloyd’s Register has been able to clearly demonstrate to a significant customer for drillship construction how it can support them, drawing upon the pool of expertise from across the organisation for that segment. Korea represents the technological coalface for drillship construction, gaining momentum for innovation, and we will continue to play our part. Lloyd’s Register is positioned to fully support the drilling operators and building yards through integrated marine and drilling system specialist teams, working closely with these clients to develop and offer solutions.”
The latest revision of LR’s rules for Mobile Offshore Units utilises the specialist drilling integrity capabilities of Moduspec and WEST, and will incorporate new classification notations for mobile offshore drilling units. These will be released in February.
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The brand new Amels 55-meter yacht, STEP ONE, had her first day out at sea on Tuesday, April 4th 2012. All tests were completed to the full satisfaction of classification bureau Lloyds Register and the Owner’s Representative, Moran Yachts & Ship.
Amels project manager Roeland Berrevoets commented: “This design has now been tried and tested, which means that there were no surprises. After a very productive day, everybody went home smiling.”
STEP ONE’s exterior is designed by the renowned British designer Tim Heywood and her full custom interior by Laura Sessa. She is the first in line of the 55 meters series and measures 660 Gross Tons. STEP ONE is part of the very successful Amels Limited Editions range, which bridges the gap between semi-custom and full custom yachts. There is a possibility that STEP ONE will be on display at the upcoming Monaco Yacht Show in September.
Amels is busier than ever with 12 new construction projects and two major refits underway. The current Limited Editions range offers four models which range from 180 feet to 242 feet (55 to 74 metres), or in gross tonnage terms, from 650 to 1720 Gross Tons. All exterior designs are by Tim Heywood, whilst a number of owners opt for a fully customised interior design.
Amels has been part of the Dutch family-owned Damen Shipyards Group since 1991. The Damen Shipyards Group specialises in technically sophisticated vessels. With approximately 6,000 employees and 38 shipyards worldwide, around 150 vessels are delivered each year. The turnover in 2011 was 1.3 billion Euro with an annual growth of around 10%.
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