MHI Launches New-Generation LNG Carrier

Tuesday, July 12, 2011

Mitsubishi Heavy Industries, Ltd. (MHI) has completed development of a new-generation liquefied natural gas (LNG) carrier. The vessel, dubbed "EXTREM," is part of the newly-developed "Sayaendo*2" Series, which features a peapod-shaped continuous cover for the Moss spherical tanks that is integrated with the ship's hull, in lieu of a conventional hemispherical cover. The new configuration enables greater structural efficiency and size and weight reductions, resulting not only in improvements in fuel consumption and operating economy but also in enhancements in terms of compatibility with LNG terminals and maintainability.

In conventional Moss-type LNG carriers, the upper half of the spherical storage tanks above the ship's deck is covered by a semispherical dome and the lower half under the deck is supported by a cylindrical skirt structure. By contrast, the EXTREM employs a continuous cover integrated with the ship's hull to house all storage tanks entirely, enabling the cover to reinforce the hull. In the conventional method, pipes, wires and catwalks atop the tanks were supported by complex structures. By covering the tanks with the integrated cover and making those supporting structures unnecessary, the new design improves maintainability.

The continuous cover over the tanks was designed to improve aerodynamics by substantially reducing wind pressure and reducing drag. Improved aerodynamics contributes to reduced fuel consumption during navigation. At the same time, the continuous cover minimizes exposure of support structures and equipments, and it also facilitates reinforcement of overall strength to be effective in resisting ice impact load, thus making the system suitable for LNG transportation in frigid or icy-water regions.

The new-generation LNG carrier measures 288 meters (m) in length overall (LOA), 49.0m in width, 26.0m in depth and 11.5m in draft. The ship has cargo tank total capacity of 155,000m3 using four Moss-type tanks. The ship is projected to respond to anticipated growth in demand for ships in the New Panamax*3 category. Compared with conventional Moss-type LNG carriers of the same size, the EXTREM has the capacity to transport 8,000m3 more LNG by employing stretched Moss tanks and its steel hull structure is about 5% lighter in weight. The depth of the ship has also been reduced by 1m, enabling better compatibility with major terminals in Japan and other countries in view of cargo manifold and gangway landing arrangement.

For its main power plant, the EXTREM adopts MHI's "Ultra Steam Turbine Plant" (UST), a new turbine plant which achieves higher thermal efficiency through effective use of thermal energy by reheating steam. Together with downsizing, weight reduction and hull lines improvement, the new ship achieves a substantial 20% reduction in fuel consumption compared to conventional ships.

Maritime Reporter July 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

People & Company News

Pine Galaxy to Arrive SF Bay Wednesday

The disabled mixed-products tanker Pine Galaxy is expected to arrive in San Francisco Wednesday morning. The ship is being towed by commercial tug to San Francisco Bay.

Industry Partnership to Enhance BOP Maintenance

The maintenance of blowout preventers (BOPs) has significant financial, logistical and safety implications for drilling operators and rig owners. DNV GL has now

Shanghai Port's Q2 Profit Down; China Trade Flagging

Shanghai International Port , the operator of the world's busiest container port, reported earnings on Wednesday that showed its second-quarter net profit fell 2.

LNG

Pskov Gas Carrier Construction Nears Completion

On August 25, 2014, the naming ceremony for the Pskov high-tech liquefied natural gas (LNG) carrier was held at the South Korean shipyard STX Offshore & Shipbuilding.

MN 100: Crowley

9487 Regency Square Boulevard Jacksonville, FL 32225 Tel: (800) 276-9539 Email: corpcomm@crowley.comĀ  Website: www.crowley.com Chairman & CEO: Thomas B.

Kogas Talks to Offload up to 10 Autumn LNG Cargoes

Korea Gas Corp. has approached long-term suppliers of liquefied natural gas (LNG) to defer up to 10 autumn cargos to winter, showing it is lumbered with excess supply and pulling out of spot markets,

 
 
Maritime Contracts Maritime Security Maritime Standards Naval Architecture Navigation Pod Propulsion Port Authority Salvage Ship Repair Ship Simulators
rss | archive | history | articles | privacy | terms and conditions | 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: 0.1758 sec (6 req/sec)