In-depth | SHIPBUILDING Japanese launch innovative vessel
Japan is keeping up with the LNG market following the launch of Energy Horizon a new vessel that incorporates the latest in energy efficient technology.
E
nergy Horizon was constructed at Kawasaki Heavy Industries (KHI), Japan, which is jointly
owned by Tokyo LNG Tanker Co., Ltd and NYK and was delivered in September 2011. The vessel is a moss-type LNG carrier
with four spherical tanks, the largest of its type, and the “first Pacific max”, has a capacity of 177,000m3
giving it better
transport efficiency due to its larger size. The 141,000gt LNG carrier is 300m in length overall and has a width of 52.00m and a depth of 28.00m, with a scantling deadweight of 97,931dwt. The vessel is powered by a KH URA-450 reheat steam turbine that has a power output of 29,890kW (SHP), giving it a service
TECHNICAL PARTICULARS Energy Horizon
Length oa: .......................................300.00m Length bp: .......................................286.50m Breadth moulded: ............................52.00m Depth moulded To main deck: .................................28.00m To upper deck: ...............................28.00m To other decks: ...............................23.25m Draught Scantling: ........................................12.50m Design: .............................................11.50m Gross: ...........................................141,136gt Deadweight Design: ........................................85,372dwt Scantling: ....................................97,931dwt
Speed, service: ..................... abt. 19.5knots @ 90% MCR output with 21% sea margin
Cargo capacity Refrigerated cargo: .................177,440m3 Main engines Design: .........Kawasaki Heavy Industries, Ltd Model: .....URA-450 reheat steam turbine Manufacturer: ................Kawasaki Heavy Industries, Ltd
Number: .................................................... 1 Output of each engine: .29,890kW (SHP)
18 Energy Horizon utilises latest environmental technology.
speed of about. 19.5knots at 90% MCR output with a 21% sea margin. A reheat turbine plant is a highly
efficient turbine plant that makes use of a reheat cycle that retains the reliability and maintainability of a conventional turbine plant. Te reheat cycle transfers steam from the steam turbine back to the boiler and reheats it. Te generated high-temperature steam is
then sent
back to the turbine. Te turbine reduces fuel consumption by up to 15% over conventional steam turbine vessels. Kazunari Aoki, technical manager,
ship sales and engineering, Kawasaki Heavy Industries commented on the decision to install a reheat turbine: “The reheat turbine system was developed for LNG carriers based on our reheat turbine system for oil tankers in the
1970s.This system was selected by the owner because it can satisfy the demand of lower fuel consumption and higher environmental performance with all
the advantages of conventional steam turbine kept, such as high reliability, flexibility of fuel selection, and less maintenance.” KHI is also looking in to other
systems, such as Dual Fuel Diesel Electric (DFDE) and MAN ME-GI engines. KHI has opted for the MOSS containment system as they say that this system has a reliable tank structure, no filling level restriction and high insulation performance. Aoki has highlighted that Energy Horizon differs
from other LNG
carriers because: “The transportation cost per unit cargo weight for Energy Horizon is the lowest for MOSS type LNG carriers in the world. This feature comes from its largest LNG tank capacity for MOSS type vessels, and low fuel consumption from the reheat turbine system. It
is also very versatile
with good compatibility with most LNG terminals in the world.” NA
The Naval Architect January 2012
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