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Maritrans Secures Patent for Converting Single-Hull Tank Ships

Maritrans Inc. has obtained a patent on its proprietary process for rebuilding single-hull tank ships and converting them into double-hull vessels. With the most recent patent, Maritrans has now patented the double-hull conversion process for both barges and tank ships. The U.S. Oil Pollution Act of 1990, as well as the International Convention for the Prevention of Pollution from Ships (MARPOL), each require the retirement of single-hull tank vessels. In January of 2001, Maritrans announced that it had received the first of three patents for internal double-hull conversions of single-hull barges. These Maritrans patents involved pre-fabrication of large tank structures that are inserted into the existing hull, with a trunk deck extending above the pre-existing deck. The design allows double-hull conversion while preserving virtually all of the previous cargo capacity. Maritrans is currently completing its fifth barge rebuilding project using this patented process. This latest patent, for single-hull tank ships, addresses the unique design of these vessels. Maritrans utilized its computer-assisted modular design process, pioneered in the previous double-hull patents, to formulate an appropriate double-hull structure for tank ships. The patent differs from the previous barge patents in that it combines the addition of an inner bottom with external side modules. Maritrans also has other U.S


Flexibility Key to MES’ New FPSO Hull Platform

Japanese shipbuilder Mitsui Engineering & Shipbuilding Co., Ltd. (MES) announced it has developed a next generation hull platform for floating production, storage and offloading system (FPSO) that aims to offer improved flexibility between projects.   Offshore oilfields vary in environmental conditions and oil properties relative to geographical location, requiring shipyards to frequently change hull design and construction scheme to satisfy varying requirements for each project


USCG Codifies Single Hull Phase-out Requirements

In a notice of proposed rulemaking (NPRM), the USCG proposes to clarify and codify a policy it issued in April 1999 regarding phase-out dates for single hull tank vessels. OPA 90 includes requirements for double hull tank vessels and phase-out schedules for all single hull tank vessels operating in U.S. waters. Tank vessel owners are required to remove single hull tank vessels from service on a specific date, depending on such factors as the vessel's gross tonnage, age and hull configuration


ExxonMobil Still Chartering Single Hulled Tankers

U.S. oil giant ExxonMobil continues to charter single-hull tankers for its oil, tanker brokers said on Thursday. ExxonMobil has been in the market for a five-year time-charter since late August, brokers said, and has recently been giving serious consideration to a single-hulled very large crude carrier (VLCC) that will be nearly 20 years old by the end of the charter in 2005. Negotiations, however, have recently reached a stalemate, brokers said.


Strategic Marine Launches Caballo Maya

Photo courtesy Strategic Marine

Strategic Marine has successfully launched the first of two 496 ft Dive Supports Vessels, Caballo Maya (Hull 156) in Vietnam. The vessel was launched on the 5th of April, 2010, with the second vessel (Hull 157) approximately 90% complete and eight weeks from completion. “We were originally awarded the contract for Hull 156 in late 2006, and were engaged to exclusively carry out the steel fabrication works on the vessel,” explained Managing Director Mark Schiller


Jotun to Offer Antifouling Coatings Guarantee

HPS.bmp

2011-05-02 – PRESS RELEASE: Jotun’s Hull Performance Solutions offers shipowners and managers who purchase Jotun’s silyl methacrylate SeaQuantum X200 a money back guarantee if the antifouling coating fails to deliver less than 1.5 per cent speed loss or a maximum 4.5 per cent increase in fuel consumption over a 60 months dry-docking interval. The Jotun Hull Performance Solutions guarantee is calculated on a transparent measurement and analysis tool


Simon Beale Elected Chairman of Joint Hull Committee

Simon Beale, underwriter of the KJ Coles syndicate at Lloyd's, has been elected chairman of the Joint Hull Committee (JHC). The JHC is a joint initiative by the International Underwriting Association of London and Lloyd's Underwriters' Association. Its role is to support and develop the role of the London hull insurance market. The JHC acts as a focal point for hull insurance issues while providing advice and representation to members on technical, legal, promotional and educational issues


Cathelco ICCP for Concept Jack-Up

Photo courtesy Cathelco Ltd.

Cathelco is supplying an ICCP hull corrosion protection system for a new type of jack-up vessel which is being constructed for Master Marine of Norway who specialize in the transport and installation of heavy structures for the offshore energy industry. The vessel, known as Service Jack 2, will initially be used to install wind turbines in the Sheringham Shoal Offshore Wind Farm which is located in the Greater Wash approximately 9 miles north of the town of Sheringham in Norfolk


Flexible Membrane Covers and Seals Damages

The Gulf Responder is a 45-ft. aluminum catamaran designed to operate in oil and hazardous chemical spills. Currently under construction at Scully's Fabricating in Louisiana, the vessel's expected delivery date will be either late January or early February. The 15-ton vessel is powered by twin turbo diesel engines with water jet propulsion and equipped with two 1,000 lb. MagnaPatch devices. The MagnaPatch is a patented pollution abatement device


Jurong Shipyard Skids Hull in Rig Construction

Jurong Shipyard Pte Ltd (JSPL), a subsidiary of SembCorp Marine Ltd has skidded the massive 14,000 ton upper hull of a $285 million semi-submersible rig over the lower hull. It is reportedly the first of its kind involving the skidding of such a heavy structure. It was conceived, designed and constructed over a two-year period. On April 11, 2001, JSPL in collaboration with associated company PPL Shipyard Pte Ltd (PPL) entered into a fixed price agreement with GlobalSanteFe Corporation


General Dynamics Bags $19 Mln U.S.Navy Order

Electric Boat  Courtesy General Dynamics

General Dynamics Electric Boat has been awarded an $18.9 million contract modification for the continued development of the Virginia Payload Module (VPM). The funds will be used to procure two VPM pre-production setups to support the manufacturing start of the VPM payload tubes


Ecospeed Demonstrator Vessel on Display

Shipowners, shipbuilders and representatives from the Green Award Foundation attended the first in a series of planned Ecospeed demonstration ‘roadshows’ (Photo: Subsea Industries)

Shipowners, shipbuilders and representatives from the Green Award Foundation  attended the first in a series of planned ‘roadshows’ Subsea Industries has initiated to demonstrate the zero environmental impact and simplicity of cleaning hulls protected with its Ecospeed hard coating


Fincantieri Bay Shipbuilding Implements FORAN

FORAN screenshot of a pusher tug (Image: Fincantieri Bay Shipbuilding)

The SENER engineering and technology group signed a contract last year with the U.S. based shipbuilder Fincantieri Marine Group for the license to use SENER’s FORAN System. FORAN is currently in use at one of the company’s shipyards, Fincantieri Bay Shipbuilding (FBS)


Eastern Delivers for Bay-Houston Towing

David B (Photo: Eastern Shipbuilding Group)

Eastern Shipbuilding Group, Inc. has delivered the escort tug David B for Bay-Houston Towing Co. on June 15, 2016.   David B (ESG Hull #239) is the third in a series of four Robert Allan, LTD. (RAL) designed Z-Tech 2400 Class terminal and escort tugs currently under construction at


New Patrol Boats Delivered to Royal Thai Police

Photo: Incat Crowther

A pair of 24-meter catamaran patrol boats has been delivered to the Royal Thai Police. Designed by Incat Crowther and built by the Bangkok based Seacrest Marine, delivery of the vessels closes a capability gap identified by the police force.


Jotun: ISO Hull Performance Standard Final Stage

Photo:  Jotun

 The ISO 19030 is finally nearing publication, in a move that has the potential to save the shipping industry as much as USD 30 billion in annual fuel costs.   It’s taken 12,000 hours of development work, involving 53 expert stakeholders, across more than three years


EURONAV Selects Jotun’s HPS for Two Suezmax Vessels

Photo: EURONAV

EURONAV has selected Jotun’s Hull Performance Solutions (HPS) for two of its Suezmax vessels. The agreement will see Samsung-built sister ships M/T Cap Guillaume and M/T Cap Philippe receive coatings of Jotun’s advanced SeaQuantum X200 antifouling


General Dynamics Bags US Navy's VPM Contract

Courtesy  General Dynamics

General Dynamics Electric Boat has been awarded a $116 million contract modification for the continued development of the Virginia Payload Module (VPM). Electric Boat is a wholly owned subsidiary of General Dynamics (NYSE: GD). The VPM will comprise four large-diameter payload tubes in a new


Damen Completes Thor Facelift

Thor undertakes refurbishment Photo Damen Shipyards Dunkerque

The DP1 jack-up vessel Thor owned by the DEME Group has completed a short stay at Damen Shiprepair Dunkerque (DSDu). During her time at the yard her hull was repainted in the new DEME livery and her thrusters inspected. Measuring 70 metres by 40 metres


Aibel Bags Greater Enfield Project Contract

Aibels offices in Singapore. Photo Aibel

Aibel Pte Ltd in Singapore has been awarded the E&P contract for modifications on Woodside Energy Ltd’s Nguijma-Yin floating production storage and offloading (FPSO) off Western Australia. The FPSO will undergo modifications to the topsides, hull and turret


Emission Changing the Smell of the Sea

Image: University of Hull

Chemistry and biological science experts at the University of Hull, say increasing acidification of the world’s oceans has the potential to significantly disrupt the way marine life communicates, with yet unknown consequences for the ecosystem.


Austal Stops Shares Trading

USNS Fall River (JHSV 4)  (Photo credit: U.S. Navy)

 Review of U.S. Ops Reportedly Underway The West Australian reported that Austal halted its shares from trading, and reportedly is in the process of reviewing its U.S. operation, Austal USA. Austal USA is best known for it construction of vessels for the U.S


US Workboat Market: Domestic Drivers

The enlarged Panama Canal potentially helps inland operators as deep(er) blue water ports attract still larger tonnage that can load more grain and bulk products. (Photo courtesy of the Panama Canal)

Sectors of the U.S. market are hot, but for how long? Five key variables drive the domestic brown water market.   The challenging operating climate currently facing blue water, international trades can and sometimes does overshadow what happens on the American side of the big pond


Future LCS Charleston’s Keel Authenticated

Official U.S. Navy file photo.

A ceremony was hosted to celebrate the keel authentication of the U.S. Navy's future USS Charleston (LCS 18), the ninth Independence variant littoral combat ship, June 28.   Charlotte Riley, wife of former Charleston mayor Joseph Riley


Sevan Marine Divests Stake in KANFA Aragon

Sevan Marine ASA said it has disposed 50 percent of its stake in KANFA Aragon AS to Sembcorp Marine Ltd. for cash consideration of NOK 20 million, representing a step in the company’s efforts to cut costs and complexity while increasing its focus on its core cylindrical hull technology.






 
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