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

People & Company News

Madsen to Chair Norway’s Research Council Executive Board

Henrik O. Madsen appointed chairman of the executive board of the Research Council of Norway   DNV GL president and CEO Henrik O. Madsen was appointed as chairman

Port of Houston Expecting Record Year

The Port of Houston Authority is expecting 2014 to close as a banner year for the port, with 34 million tons of cargo handled through November, Executive Director

Hapag-Lloyd Completes CSAV Merger Capital Increase

Hapag-Lloyd completed the planned capital increase of EUR 370 million (approximately $452.5 million) as part of the business combination with the Chilean shipping

LNG

Liquefaction Terminals to Dominate LNG Capital Expenditure

Capital expenditure (Capex) on global LNG facilities is expected to total $259 billion (bn) over the period 2015-2019, with investments expected to be 88% larger

Wärtsilä to Begin Building LNG Terminal in January

Wärtsilä has been given full notice to proceed (NTP) from Manga LNG Oy for the supply of a liquefied natural gas (LNG) import terminal in Tornio, Northern Finland.

EGAS Tenders for as many as 48 LNG Cargoes

Egypt's state-owned gas company EGAS has tendered to buy at least 48 cargoes of liquefied natural gas (LNG) for delivery in 2015/16, three traders said. A senior

 
 
Maritime Contracts Navigation Offshore Oil Pipelines Port Authority Salvage Ship Electronics Ship Repair Ship Simulators Sonar
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: 0.1729 sec (6 req/sec)