Mitsubishi Heavy Industries, has received an order for an LNG carrier for Nippon (NYK Line) through MI LNG, a joint venture established with Imabari Shipbuilding in April 2013.
The order the is the eighth to date for the “Sayaendo,” a next-generation LNG carrier offering superior fuel efficiency developed independently by MHI. Completion and delivery of the ship are scheduled for 2017.
The Sayaendo LNG carrier measures 288.0 meters (m) in length overall (LOA), 48.94m in width, and 11.5m in draft. With gross tonnage of 138,000 (deadweight tonnage: 75,000t), the ship has a service speed of 19.5 knots per hour. Total cargo tank volume is 155,300 cubic meters (m3) (LNG carrying capacity: 153,000m3). Construction will be carried out at MHI’s Nagasaki Shipyard & Machinery Works based on the order receipt from MI LNG.
The Sayaendo features four Moss spherical tanks protected by a peapod-shaped continuous cover integrated with the ship’s hull. This innovative configuration enables a reduction in weight while maintaining the ship’s overall structural rigidity, and also significantly reduces air resistance during navigation. For its main power plant the Sayaendo adopts MHI’s “Ultra Steam Turbine Plant” (UST), a turbine that provides higher thermal efficiency through effective use of thermal energy by reheating steam. Fuel efficiency can be improved by more than 20% compared to conventional ships.
The adoption of a continuous tank cover eliminates the need for overhead supporting structures for piping, wiring and catwalks, and also greatly improves maintenance ease. In addition, enhanced fuel efficiency contributes to lower carbon dioxide (CO2) emissions and the adoption of a ballast water treatment system lessens impact on marine ecosystems, thus addressing environmental issues more effectively.
Source and Image Credit: MHI
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