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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


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


South Korea to Ban Single-Hulled Tankers after Spill

Reuters reported that South Korea will ban single-hulled tankers from traveling in its waters by 2011, earlier than the international regulation that calls for a ban from 2015, Seoul's maritime ministry said. A single-hulled tanker was involved in South Korea's worst oil spill last month, leaking around 10,500 tons of crude oil after a sea-bound crane mounted on a barge punched holes in the tanker's hull. As of January


Monjasa Buys Tanker from Eships

Eships Bainunah will become African Sprinter in January 2015 (Photo: Monjasa)

The Monjasa Group has purchased a tanker, M/T Eships Bainunah, from Abu Dhabi based Eships, the company announced today. The Turkish-built (2005), IMO-II, 8,000 DWT vessel, which is double hull and fully equipped for bunkering, has been operating for Monjasa on time charter


UASC Selects Jotun Coatings for 11 New Containerships

Photo: Jotun

As part of a $2.3 billion newbuilding program, United Arab Shipping Company (UASC) has reached an agreement with Jotun for the provision of antifouling coatings for 11 new container vessels. The agreement marks the first time the companies have worked together on marine antifouling hull coatings


Next Generation Shock Mitigation for Fast Boats

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Workboat construction now demands that naval architects factor in the physical demands on passengers and crew. As wind farm requirements increase, so too will the need for greater protections. A major challenge for the builders of next generation RHIBs and high speed craft is delivering


ESG Holds HOSMAX Double Launch Event

HOS Brairwood

Eastern Shipbuilding Group, Inc. held its third HOSMAX Double Event in Panama City, Florida. On Friday, October 24, 2014, the christening and subsequent launching of the HOS Brairwood (Hull 210) the 10th HOSMAX launch in 20 months, followed with the same day delivery of the HOS Black Watch 


US Navy Orders More RIBs from Willard Marine

Photo: Willard Marine

The U.S. Navy has awarded Willard Marine, Inc. a contract for a new generation of 11-meter RIBs for standard ship’s boat operations. To date, eight standard craft with an Open Center Console (OCC) configuration and two OCC LPD-17 class variants have been ordered.


Cruise Vessel Drydocked at Great Lakes Shipyard

Photos courtesy of Greak Lake Shipyards

Great Lakes Shipyard has been awarded a contract for routine drydocking of the M/V Nautica Queen. The cruise vessel was hauled out using the 770-ton capacity Marine Travelift at Great Lakes Shipyard on Monday, November 10, 2014. The repair contract includes drydocking


USCG Warns on Hull Magnet Modifications

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This alert raises awareness as to the importance of not modifying equipment or components from their intended design or operation.  Recently, a State Pilot suffered a concussion as he was boarding a vessel via its pilot ladder.  The primary cause of the accident was an improperly


Damen Delivers Tug for Scrabster Harbor

Stan Tug 1606, Highlanders

Scrabster Harbor Trust (UK) has taken delivery of a new harbor tug / workboat, a Damen Stan Tug 1606. The vessel, named Highlanders, will replace itscurrent workboat which was built in 1976. The new tug will undertake pilotage, towing, general harbour and maintenance duties.


SAR Boat Named ‘Ship of the Year’ by KNVTS

Photo courtesy of Damen

KNRM, Delft University of Technology, De VriesLentsch Naval Architects and Damen: maritime cooperation leads to innovation Damen and its partners have won the Royal Netherlands Society for Marine Engineering (KNVTS) ‘Ship of the Year Award’ for Nh1816


Endurance Appointed Custodian of 1860s Shipwreck

S.S. Connaught

Exploration Group, Inc., a company which performs shipwreck research, survey and recovery, was appointed, by the U.S. District Court for the Middle District of Florida, Tampa Division, as substitute custodian of the recovered hull fragment artifacts and any future artifacts recovered from the


GAC Starts Hull Cleaning Op'ns in Oman

HullWiper in Oman 400

GAC EnvironHull hull cleaning operations using the brush-and-diver-free HullWiper system starting at the port of Sohar, just outside the Gulf of Hormuz. This latest expansion adds Oman to the growing GAC EnvironHull network which already covers Dubai, Fujairah and Sharjah in the UAE


Petrobras P-66 Platform Module to Boost Production

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  The P-66 platform’s first modules, built at the Tomé Ferrostaal Consortium’s Module Plant located at the Port of Maceió, Alagoas, are now ready and loaded on the São Tomé barge. The oil processing module (M08) and the oil processing and produced


Teekay Renews Hull and Propeller Monitoring for LNG Carriers

Daniel Kane

Canada-based shipping company Teekay Corporation has renewed its contract with Propulsion Dynamics for its hull and propeller performance monitoring system CASPER Service. The Computerized Analysis of Ship PERformance (CASPER Service) from Propulsion Dynamics is a turnkey subscription service


ClassNK Certifies Ship with Air Lubrication System

Photo: MHI

ClassNK has completed the EEDI appraisal of Harvest Frost, the world’s first post-panamax bulk carrier fitted with the Mitsubishi Air Lubrication System (MALS). The Harvest Frost was constructed by Oshima Shipbuilding Co., Ltd. for ADM Harvest Shipping in accordance to ClassNK rules and


'Environmental' Hull Cleaning Ops OK'd in Oman

HullWiper ROV

Oman’s Ministry of Environment and Climate Affairs has granted GAC EnvironHull permission to conduct underwater hull cleaning operations using the brush-and-diver-free HullWiper system at the port of Sohar, just outside the Gulf of Hormuz






 
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