Duplex Stainless Steel News

14 Sep 2018

MJP to Supply Waterjets for New US Army Landing Craft

(Image: MJP)

Shipbuilder Vigor has selected Marine Jet Power (MJP) as the propulsion provider for the U.S. Army’s new Maneuver Support Vessel (Light), MSV(L) vessels.Vigor was awarded the 10-year, $979,390,000 MSV(L) contract in 2017 to construct a new generation of landing craft to replace the existing LCM-8 Mike boats.The new vessels will feature triple drive MJP 750 DRB waterjets, constructed from duplex stainless steel and offering the latest advancements in MJP’s proprietary mixed flow technology. The propulsion package has been optimized to fit the needs of the U.S.

02 Mar 2018

Rolls-Royce Propulsion for New Hong Kong Fast Ferries

(Image: Rolls-Royce)

Rolls-Royce said it has been contracted to deliver Kamewa waterjet propulsion units and MTU engines for three 42m high-speed, lightweight carbon fiber ferries for operation between Hong Kong and Guangzhou, China. The vessels will be built at the Brødrene Aa shipyard in Norway. The same shipyard has also ordered Rolls-Royce propulsion for two similarly-sized ferries to serve routes in the north of Norway. As well as Kamewa steel-series waterjets from Rolls-Royce, all five vessels will be powered by MTU series 2000 diesel engines.

07 Apr 2017

New Pilot Boat Enters Service in Turkey

Photo: Robert Allan Ltd.

A newly built pilot boat Kara Yusuf, named after the owner’s grandfather, went into service on March 4, 2017 in Turkey. The boat will provide pilot transfer service in the southwest region of the Marmara Sea. Designed by Robert Allan Ltd., of Vancouver Canada, the boat was built by ICDAS Shipyard in Turkey for their own use as well as for marketing to the pilotage industry. Designated as the RAlly 1600 class, the 16 m boat is constructed with a steel hull and aluminum deckhouse.

22 Dec 2015

ClassNK Bulletin Examines 2015 Developments

Classification society ClassNK informs it has released a summary of the latest industry developments in its annual Technical Bulletin, which this year covers topics including marine energy usage, research on fatigue strength and R&D project outcomes. The opening paper explores the possibilities and challenges of tidal power, offshore wind power, and wave power, and outlines tidal power generation systems around the world. A technical report then takes a broad look at the trend of ocean energy development in Japan and ClassNK’s initiatives related to the certification of renewable ocean energy power generation devices. As the average size of containerships increases…

23 Jun 2015

Stolt Acquires Three Ships for European Fleet

Stolt Tankers B.V. has agreed to acquire three 5,800 dwt fully stainless steel parcel tankers from Odfjell Tankers AS. The ships, which were built in 1997-1998 and are sister ships of three tankers currently operated by Stolt Tankers, are expected to join the Stolt-Nielsen Inter-Europe Service by the end of August 2015. Further terms of the transaction were not disclosed. Commenting on the purchase, Hans P. Feringa, President of Stolt Tankers, said, "We are pleased to have acquired these well priced, high quality assets, which enhance the scale efficiency of our fleet of European regional parcel tankers. The three ships are highly specialised, with 20 duplex stainless steel tanks, ICE class 1A and fitted with nitrogen generators.

23 Jun 2015

Stolt Tankers Buys Three Ships

Stolt-Nielsen Limited (Oslo Bors: SNI) announced  that Stolt Tankers B.V. has agreed to acquire three 5,800 dwt fully stainless steel parcel tankers from Odfjell Tankers AS. The ships, which were built in 1997-1998 and are sister ships of three tankers currently operated by Stolt Tankers, are expected to join the Stolt-Nielsen Inter-Europe Service by the end of August 2015. Further terms of the transaction were not disclosed. Commenting on the purchase, Hans P. Feringa, President of Stolt Tankers…

23 Jun 2015

Verotec’s VMEbus Sails Through Shock Test

VMEbus (Photo: Verotec)

Verotec has supplied suites of five different VMEbus-based systems to a global US-based naval and marine systems integrator. The systems will be used in military shipboard applications, so meeting exacting shock and vibration requirements was a critical requirement. Each system consist of a VMEbus backplane and two military grade power converters mounted in custom plug-in modules in special subracks based on Verotec’s KM6-HD family. Extensive Finite Element Analysis (FIA) confirmed that the systems would withstand an onerous 25g shock test and also vibration to MIL-STD-167.

24 Feb 2015

Sandvik to Present at NACE CORROSION 2015

Sandvik's new stainless steel technology (Photo courtesy of Sandvik)

Global technology engineering group Sandvik will present corrosion resistant alloys, including its new Sandvik SAF 3207 (UNS S33207) hyper-duplex stainless steel at NACE CORROSION 2015, the company announced today. NACE CORROSION 2015, the world's largest corrosion conference and exhibition, will take place in  Dallas, Texas, between March 15-19, at the Kay Bailey Hutchinson Convention Center. Sandvik will exhibit its full range of advanced corrosion resistant alloys, including duplex and super-duplex grades…

17 Nov 2014

Newbuild Chemical Tanker Employs Innovative Tank Design

The 12,500MT Sunrise Hope is 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.

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.

11 Nov 2014

Wärtsilä Expands Valve Range

A butterfly valve undergoing liquid penetrant inspection to check integrity of casting quality

Wärtsilä Shipham Valves has extended its range of duplex and super duplex stainless steel valves to cover higher pressure ratings. The full product range of Wärtsilä Shipham Valves, including gate, globe, check, ball and butterfly valves, can now be specified in duplex and super duplex, with sizes ranging from 1/2 inch (15mm) to 48 inches (1,200mm) and pressure ratings up to ANSI 1,500 lbs. Shipham Valves is a Wärtsilä company and based in the U.K. The extended offering of duplex and super duplex valves meet the requirements of NORSOK M-630…

22 Sep 2014

MJP Introduces Hybrid Waterject

Marine Jet Power (MJP) introduced a new product concept that is optimized for high-speed applications. According to MJP, the new hybrid waterjet combines the best characteristics of the MJP DRB series with the Ultrajet series. MJP said the idea to take the best from its DRB and Ultrajet series and make a Hybrid that is optimized for high-speed applications came soon after MJP’s merger with Ultrajet. The concept originated with what MJP believes is the best duplex stainless steel jet pump on the market.

11 Aug 2014

MJP Waterjets in TYM Fast Attack Craft Trials

Photo courtesy of MJP

Successful sea trials of Tampa Yacht Manufacturing’s latest 50 Fast Attack Craft won praise for the performance of MJP waterjets. The 50’ Fast Attack Craft is a carbon-fibre reinforced, GRP 16.15M (53’) LOA, patrol vessel with a beam of 4.43M (14’8-1/2”). The design has been a best seller for Tampa Yacht Manufacturing and exists in multiple mission configurations. The latest craft is the first to have been equipped with MJP waterjets but retains the standard MAN R6 800HP diesel engines running at 2,350rpm, and a ZF 500 Gearbox at 1.125:1 Ratio.

27 Mar 2013

ClassNK Approves Duplex Stainless Steel Tankers

ClassNK announced  that it has approved the first application of duplex stainless steel (NSSC 2120) on vessels in Japan. Tankers built by the Japanese shipyards Sasaki Shipbuilding Co., Ltd and Hakata Shipbuilding Co., Ltd were applied with the duplex stainless steel, which was manufactured by Nippon Steel & Sumikin Stainless Steel Corporation. The two domestic vessels, a chemical tanker and an oil tanker, were launched on January 17, 2013. The cargo tanks for use in chemical tankers built in Japan are generally constructed with austenitic stainless steel SUS304. However, with a nickel content about one quarter of that of SUS304, the…

29 Apr 2013

Stainless Steel Tankships a First in Japan

Stainless Steel Tankship: Photo courtesy of Hakata Shipbuilding

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.

01 Sep 1999

Investment in Design -- A happy coupling

Largely complementary operations, a strong base in terms of volume and technologies, plus considerable synergy potential, provided a solid platform for the coupling of the marine equipment and design activities of Norway's Ulstein group and the British-owned, specialized engineering force Vickers. At a stroke, the combined strengths represented in Vickers Ulstein Marine Systems made the new entity the leader in specific market segments. However, its wide-ranging capabilities provide the requisite resources to increase penetration in existing areas of engagement and break into new markets. Just as the organization has quickly acted on its considerably widened package supply potential…

19 Jul 2001

IZAR Tapped To Build Chem Tanker

The reinvention of the Spanish shipbuilding industry under the moniker IZAR as of earlier this year is apparently an immediate success, as news emanating from the organization show the group is winning a number of lucrative, and diverse, shipbuilding projects. IZAR has won a contract to construct a 22,700 cu. m. oil product chemical tanker for a Chilean shipowner. The tanker will be built at Gijon shipyard, northern Spain, where it will be equipped with 28 duplex stainless steel tanks able to carry over 800 IMO I and IMO II chemical cargoes as well as refined oil products. The vessel has been designed with double hull and double bottom in the way of the cargo tanks.

21 Jun 2013

China Yard Launches Mult-parcel Chemical Tankship

New Chemical Carrier: Photo credit Mingde

Mingde Heavy Industry has launched what it says is the biggest stainless steel inner-hulled chemical tanker ever built in Asia. The length of this vessel is 183m, 28.4m in breadth and 15.2m in depth, and a loaded draft of 10m. The vessel is powered by a low speed diesel engine driving a single propeller for unrestricted navigation, with a dead weight tonnage of 30,000T. This tanker can carry 28 parcels of chemicals, and all of its inner hull for cargo is 2205 duplex stainless steel.

15 Dec 2011

Ship Emissions First: Commercial Scrubber System in Operation

Hamworthy Krystallon announced that the first of four vessels installed with the company’s seawater scrubbers for Italian ship owner Ignazio Messina & Co has come on line. Linea Messina is reported to be the first ever vessel to operate commercially with a scrubber system, enabling Ignazio Messina to meet 0.1% sulfer emissions regulations in EU ports, as well as “future-proofing” the vessel for the impending 2015 0.1% Emission Control Area (ECA). “This is a landmark moment, not just for Hamworthy Krystallon, but the entire shipping industry,” said Sigurd Jenssen, Managing Director, Hamworthy Krystallon. “Bringing Linea Messina on line highlights the validity of scrubbing technology as a viable and cost-effective solution to meet the stringent sulphur emissions regulations…

03 Aug 2006

GL Contracts 60th Ship with Chinese Yard

A 19,800 dwt stainless steel chemical tanker vessel is the 60th ship being built with Germanischer Lloyd class at Qingshan Shipyard. The 10th anniversary of close cooperation between Qingshan Shipyard and Germanischer Lloyd is being celebrated on August 3 with a ceremony attended by more than 100 guests. Participants include the President of Chang Jiang Shipping Group Liu Xihan, the Vice Governor of Hubei Province Li Chunming, the Vice Mayor of Wuhan City Yue Yong and other representatives of local government and authorities. 27 vessels have been delivered since 1996, 33 ships are under construction and on order. In total, more than 750,000 dwt have been constructed with GL class at Qingshan Shipyard. Qingshan Shipyard has 3,800 employees and is located at the Yangzi River in Wuhan.

26 Jun 2012

Moss Hydro Engineers Create Revolutionary Filters

Moss Hydro Robotized Production Line

Newly-formed Moss Hydro has been established to address a ballast water challenge that is threatening the entire shipping industry – reliable filtration. Stein Foss, the former CEO and co-founder of ballast water treatment (BWT) business OceanSaver, has set up the independent company with three partners, and an array of engineering, marketing and manufacturing experts. Together they are creating revolutionary filters designed specifically for ballast water treatment. “Our filters are unique,” comments Moss Hydro CEO Foss.

14 Jan 2014

PYPLOK Reduces Assembly Times and Installation Costs

Chris Peitchinis outlines the benefits of using PYPLOK mechanically attached connectors which reduce new installation or maintenance repair costs. PYPLOK connectors are attached cold, in seconds, by swaging the connector on the pipe or tube with a hydraulic hand held tool. All the labor and associated costs of a conventional welded connection are eliminated. •    No special skilled labor required vs. qualified welder. •    Actual swaging time is measured in seconds vs. hours for a welded joint. •    No fire watch personnel required.

14 Jan 2014

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…

19 Feb 2014

Cranston Eagle Hooks USCG Approved

Photo: Cranston Eagle

Cranston Eagle received approval from the United States Coast Guard for the certification of its new DPR-506-CBH marine off-load hook under the approval number 160.133/77/0. This new, fall-mounted hook is rated at 5,000 kg safe working load (5 metric tons) and bolsters Cranston Eagle's line of USCG certified off-load hooks to five. With more than twenty off-load marine hook models in its line, Cranston Eagle is known around the world for producing one of the most robust and reliable marine hooks on the market.

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