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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


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


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


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


First of Six New Tugs Delivered to BHP Billiton

Photo: Image: Robert Allan Ltd.

With the arrival of the Iron Kestrel and Iron Corella in Port Hedland, Western Australia, the first two of BHP Billiton Iron Ore's six boat order for Robert Allan Ltd.’s RAstar 85 Class escort tugs have now been delivered by ASL Shipyards Singapore.  


St. Johns Delivers for Vane Brothers

Philadelphia is the fifth of eight new tugs being built by St. Johns Ship Building for Vane Brothers (Photo: St. Johns Ship Building)

St. Johns Ship Building has delivered the newly built tug Philadelphia to owner Vane Brothers.   Philadelphia is the fifth of eight new hulls for Vane Brothers in the Elizabeth Anne tug series consisting of 100 feet LOA, 4,200 HP twin screw tugs.  


Hull Cleaning Robot Deployed in Rotterdam

Photo courtesy of René Klootsema

Recently the hull of the vessel Vlieborg from Wagenborg has been cleaned in the Port of Rotterdam by Fleet Cleaner and OH Ship Cleaning. The vessel was heavily fouled with slime and algae, which were all removed from the hull and captured by the installation


Jadrolinija Ferries Collide in Zadar

Sis (left) and Juraj Dalmatinac. Photo: Jadrolinija

 Two Jadrolinija ferries collided last night at port of Gaženica but none of the passengers or crew members was injured in the collision and there was no pollution of the sea.   According to a report in Index, the ships did not suffer any significant damage and that the collision was


Marine Coatings Evolve for the Better

High performance underwater hull coatings are always in demand, driven by continuous pressure to reduce operational fuel costs while staying environmentally compliant. (Photo: Sherwin Williams)

Innovation and new technology continue to shape the marine coatings market. A narrowing field of global coatings manufacturers offer new products while improving existing ones to meet customer demand. Ultimately, customer demand, along with environmental compliance pressures are all driving the


World's Largest Containership Delivered

Image: Samsung Heavy Industries

The world's largest containership, MOL Triumph, was delivered to Mitsui O.S.K. Lines (MOL) from Samsung Heavy Industries on March 27, 2017.   MOL's newest vessel, the first of a fleet of six 20,000 TEU-class containerships for the company


DSME, DNV GL Partner for Efficient LNG Carrier Design

Johan Petter Tutturen, DNV GL – Maritime Business Director Gas Carriers.  (Photo: DNV GL)

At the Gastech 2017 conference in Tokyo, Japan, DSME and DNV GL presented the results of a joint development project (JDP) for the design of an innovative, efficient LNG carrier based on today’s technology.   The project focused on delivering a design which an owner can take straight


Horizon Delivers Second NYC Ferry Newbuild

Photo: H200 (Photo: Horizon)

Alabama shipbuilder Horizon Shipbuilding, Inc. said it has delivered the second of 13 NYC Ferry vessels being built for NYC Ferry Operated by Hornblower, which will launch this summer.   With sea trials and U.S. Coast Guard certification now behind her


DNV GL Grants AIP for Double Side-hull LPG Carrier

Photo: DNV GL

At the Gastech 2017 conference in Tokyo, DNV GL presented Hyundai Mipo Dockyard (HMD) with an approval in principle (AIP) certificate for a new double side-hull LPG carrier design – LPG SAFE (Structural Advances for the Environment). The result of a development project conducted by HMD


A Traditional Ship with a Contemporary Heart

Photo Courtesy of BAE Systems

Old photos show mid-nineteenth century sailing ships abandoned in the San Francisco Bay area by crews who caught gold fever. Some of these abandoned hulls lie under the modern day city of San Francisco. Over in Sausalito, just to the north of the famous Golden Gate Bridge


Unusual Sea Chest Blanks for Teekay FSO

Photo: Miko Marine

Teekay's Randgrid is currently undergoing a major conversion into a floating storage and offloading (FSO) vessel with work that includes the installation of an internal turret mooring system.   Oslo-based Miko Marine said it has delivered four unique magnetic sea chest blanks for use during


Mitsui Innovation: noah-FPSO Hull Gets AIP from BV

(Image: Mitsui)

Mitsui Engineering & Shipbuilding Co., Ltd. (MES) obtained Bureau Veritas Approval in Principle (AIP) for the noah-FPSO Hull and associated design and construction methods following American Bureau of Shipping. This AIP provides assurance of the feasibility and reliability of the


Euronav VLCC Aground near Indonesia

 MT Alex, a very large crude carrier (VLCC) owned by Belgian tanker company Euronav Ship Management ran aground in Java Sea.   The DWT 299,446 vessel, in laden condition, was sailing between Borneo and Sumatra on its way to Ningbo, China under load of crude oil


Brazilian Shipyard BECONAL Uses FORAN

Photo: FORAN

The SENER engineering and technology group has signed a contract with shipyard Bertolini Construção Naval da Amazônia Ltda (BECONAL), providing it with a license to use its marine design and construction system, FORAN.


Is Tin Returning in Silicone Hull Coatings?

Photo: Subsea Industries

The reemergence of organotin in marine hull coatings is of increasing concern, with academics and environmentalists calling on International Maritime Organization (IMO) to investigate the use of tin in silicone-based foul release systems and other ships hull coatings.  






 
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