Newbuild Chemical Tanker Employs Innovative Tank Design
The world's first chemical tanker to use a combination of duplex stainless steel and stainless clad steel in the construction of its cargo tanks was delivered to Oita-based Hiro Naviera S.A. November 15, 2014 by Usuki Shipyard Co., Ltd., Japanese classification society ClassNK reported. The 12,500MT chemical tanker Sunrise Hope, owned by Hiro Naviera S.A., will be operated by Nippon Marine Co., Ltd. The eco-ship design vessel is equipped with 14 cargo tanks, all which employ duplex stainless steel technology.
ClassNK Issues New Welding Guidelines
Classification society ClassNK (Chairman and President: Noboru Ueda) announced that it has released new Guidelines on the Welding of Duplex Stainless Steels. The guidelines have been developed to help shipyards safely and effectively make use of new duplex steels that are increasingly being used in the construction of cargo tanks for chemical carriers. As part of its work to support the safe construction of ships, ClassNK has released the guidelines for free via its website. Duplex stainless steel has a two-phase microstructure containing grains of both ferritic and austenitic phase…
Stainless Steel Tankships a First in Japan
Duplex stainless steel, NSSC®2120 by Nippon Steel & Sumikin Stainless Steel Corporation was recentlly chosen for the construction of two domestic tankers. Sasaki Shipbuilding Co., Ltd. & Hakata Shipbuilding Co., Ltd. became the first shipbuilders in Japan to use stainless steel in the recent construction of the vessels, although these days, duplex stainless steels (ASTM A240M S31803, S32205) are increasingly being used for the construction of chemical tankers around the world.
