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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

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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


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


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


Researchers Study Hull Biofouling and Spread of Invasive Species

Photo: Subsea Industries

A new study seeks to determine the extent to which biofouling on ships’ hulls is contributing to the spread of invasive aquatic species in the Mediterranean Sea – a phenomenon commonly associated with ship ballasting operations.


AHHI Insures 1,900 Vessels in First Year

Photo: American Hellenic Hull Insurance

 Cyprus-based American Hellenic Hull Insurance (AHHI) surpassed key targets during its first year of operation: 1,900 insured vessels, written premium income exceeded $10 million and covered 35 million GT on 100% basis, said a press statement.  


New Passenger Vessel Delivered to Majestic Ferries

Majestic Dream (Photo: Incat Crowther)

Majestic Ferries’ fleet continues to grow with the delivery of Majestic Dream, the first of a new class of Incat Crowther-designed fuel-efficient 39m HSC compliant passenger vessels.   Majestic Ferries operates vessels between Singapore and Batam in a competitive marketplace


DHS Custom Passenger Ferry Launched

Photo: Gulfstream Shipbuilding

Gulfstream Shipbuilding launched a custom passenger/vehicle ferry for the U.S. Department of Homeland Security (DHS) on July 12, 2017.  This 118 x 27 x 10.75 ft. crew boat-style vessel will be delivered in the fall 2017 to service the New York and Connecticut waters


Earth, Wind & … Fire Protection

Fire Protection: Staff aboard a floating producer pass several coatings types. (Photo: Øyvind Hagen, Statoil)

Three years ago coatings giant Jotun was buying up real estate for U.S. market access and location savings. The effort to get closer to its shipping and offshore customer base is still underway with research aimed at protecting client assets in frontier areas like the arctic


Norwegian Joy Christened in Shanghai

Photo: Norwegian Cruise Line

Norwegian Cruise Line’s first custom-designed ship for the Chinese cruise market, Norwegian Joy, was christened in a ceremony held onboard the vessel in Shanghai that featured a performance by the ship’s Godfather, singer songwriter, music producer, actor and film director, Wang Leehom


New Propulsor Leverages PM Technology

Image: Steerprop / The Switch

Finnish collaborators have unveiled a new propulsion unit. Azimuth propulsion specialist Steerprop has rolled out its new CRP ECO LM propulsor featuring permanent magnet (PM) technology from The Switch.   Steerprop has been developing propulsion units since 2001, while The Switch


ClassNK Updates PrimeShip-HULL for Container Carriers

Photo: ClassNK

Classification society ClassNK has released its latest version of its structural design support software for container carriers “PrimeShip-HULL for Container Carriers.” “PrimeShip-HULL for Container Carriers” consists of prescriptive calculation software and direct


US Navy Christens Littoral Combat Ship Billings

Photo: United States Navy

 The Navy has christened its newest Freedom-variant littoral combat ship, USS Billings (LCS 15),  in Marinette, Wisconsin.   The future USS Billings honors the largest city in Montana. It will be the first ship of its name in naval service.  


DONG, CWind Extend Crew Transfer Vessel Contract

Photo: CWind

CWind, a provider of services to the offshore wind industry, informs that DONG Energy, one of the key energy groups in Northern Europe, has granted CWind a two-year extension to its existing three-year Crew Transfer Vessel contract at the West of Duddon Sands Offshore Wind Farm in the Irish


New Catamaran Ferry for South Korea Launched

Photo: Incat Crowther

A newly built 50-meter high-speed catamaran passenger ferry for Seaspovill of South Korea, SeaStar 11, has been launched at Austal Limited’s shipyard in the Philippines.   Austal said it was awarded the A$16 million (US$12.1 million) contract to build the Incat Crowther designed


HII Wins USS Columbus Submarine Repair Work

HII’s Newport News Shipbuilding division has been awarded a $219 million modification to a previously awarded contract to execute maintenance and modernization efforts on the submarine USS Columbus (SSN 762), shown here in Yokosuka, Japan. (U.S. Navy photo)

 Huntington Ingalls Industries (HII) announced that its Newport News Shipbuilding division has been awarded a $219 million modification to a previously awarded contract to execute maintenance and modernization efforts on the submarine USS Columbus (SSN 762).  


Fleet Cleaner Goes to Work

Photo: Fleet Cleaner

Fleet Cleaner robot cleans several 350m+ containerships in Dutch ports   After recently launching its ship hull cleaning installation in all Dutch ports, Fleet Cleaner has cleaned various container vessels measuring more than 350 meters long.  


Grand Bahama Shipyard Appoints UK Representative

Carnival Glory (Photo: GBS)

Grand Bahama Shipyard and L&R Midland (UK) Ltd have signed an exclusive agency agreement covering the U.K. markets effective June 1, 2017.   Caribbean shipyard Grand Bahama Shipyard (GBS) has engaged L&R Midland (UK) as its representative in the U.K


Tuco Marine Launches Aquaculture Service Boat

(Photo: Tuco Marine)

 Denmark based boat builder Tuco Marine has launched a newly developed boat for high-pressure cleaning for fish farm operations in Norway.   According to Tuco Marine, the 15-meter workboat – an expansion of its ProZero vessel series – has been designed by the






 
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