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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.


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


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


S. Korean Shipbuilders Rushing to China for Hull Production

According to reports, South Korean shipbuilders are scrambling to move production of ship hulls to China to take advantage of its cheap labor and vast factory sites, industry sources said. Making hull blocks is mainly labor-intensive, so it is cost effective to manufacture hull blocks in China and assemble them back in South Korea, the sources said. Leading the pack is Samsung Heavy Industries Co., the world's third-largest shipbuilder


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


EBDG Hires Two New Marine Engineers

EBDG proudly welcomes two new Marine Engineers to its team: Nick Bannon to its Seattle office and John T.D. Lair to its New Orleans office. Nick Bannon comes to EBDG with eight years of industry experience including extensive knowledge of coast guard regulations


Portuguese Navy Orders Sonar System Upgrades

General Dynamics Canada is installing an adjunct processing system on three VASCO DA GAMA-class frigates of the Portuguese Navy. Designed by General Dynamics Canada, the ECLIPSE adjunct processor provides the in-service AN/SQS-510 sonar systems with enhanced operational capability to detect


Ben3D Introduces ContainerTug 600S

Photo courtesy of Ben3D

Ben3D BV Naval Architecture introduce in collaboration with Oonincx Shipbuilding BV the innovative ContainerTug 600S. A strong, compact Dutch built workboat with a remarkable feature: it can be transported as a standard 20 foot container. The 1,200 kg bollard pull


Zamakona to Build Tug for HPC

Image courtesy Zamakona Yards

Haifa Port contracts 70 t Voith Tug with Zamakona Yards Haifa Port Company (HPC) has awarded the international tender for a new build Voith Schneider tug to Zamakona Yards. HPC has tendered a tug which is a sister vessel of the ones already operating in the harbor


China Navy Commissions New Guided Missile Destroyer

Warship Commissioning: Photo PLAN

The warship "Kunming", hull number 172, was officially handed over to the People's Liberation Army Navy (PLAN)  at a recent ceremony held at the Jiangnan Shipyard in Shanghai, informs Xinhua. The new warship belongs to the new generation of China-made guided missile destroyers and


HEMPAGUARD: New Antifouling from Hempel

Hempel said its brand-new HEMPAGUARD, a ground-breaking hull coating concept, offers resistance to fouling during idle periods, significant fuel savings and trading flexibility. HEMPAGUARD shows excellent fouling resistance for up to 120 days during idle periods and fuel savings of six percent on


Eastern Shipbuilding Get GLDD Dredger/Tug ATB Contract

Image courtesy of Eastern Shipbuilding

Eastern Shipbuilding inform that Great Lakes Dredge & Dock Company, LLC (GLDD) has placed orders for construction of a 433’ Trailing Suction Hopper Dredge Barge and a 158’-4” 15,600 BHP, CPP Tug. Named the GLDD302 (ESG Hull 252)


Software Tailors Hull Coatings to Specific Vessel Ops

Intertrac records vessel draft, total sea miles, seamiles per month, percent activity above 5 knots and stationary periods. The system divides the world’s oceans and coastal waters into 64 large marine ecosystems and overlays a vessels route, speed and location data in order to calculate a fouling risk from very low to very high.

Overlays global oceanic and coastal foul risk assessments for any vessel AkzoNobel’s Marine Coatings business, the producer of advanced International hull coatings has developed Intertrac, the shipping industry’s first, patented applied for software system that enables ship owners


Ecospeed Agent Appointed in Germany

Karberg & Schmitz GmbH of Hamburg, Germany, have been appointed as Ecospeed agents for the German territory, representing Subsea Industries and Hydrex in the sale and delivery of Ecospeed, Ecoshield and related products including service, maintenance and warranty work.


US Senator John Warner Visits Namesake Submarine at NNS

Warner visit: Photo courtesy of HII

Huntington Ingalls Industries inform that its Newport News Shipbuilding division has hosted a visit by former U.S. Sen. John Warner and ship's sponsor Jeanne Warner today to see the steady progress being made on the Virginia-class fast attack submarine bearing his name.


Editor's Note

Joe Keefe New photo.jpg

Even if, as Marcon International’s Bob Beagle says, barges are the workhorses of the towing industry, then the pushboats that propel the 38,000 (documented and undocumented) deck, hopper, tank, crane and miscellaneous purpose barges to their destinations are the heart and soul of the most


New Incat Crowther Build Underway

Image: Incat Crowther

Incat Crowther announced that construction has commenced on a 28m Catamaran Utility Vessel. Under construction at Marine Diesel Services, the vessel will be delivered to Nordic Maritime. The new vessel will build on the expertise and experience Incat Crowther demonstrated by vessels such as


EBDG-designed aluminum ferry to be Constructed

Elliott Bay Design Group has designed a  steel hull, aluminum superstructure vessel which will be built  by Nichols Bros Boat Builders for Wahkiakum County.  The 115  ft. x 47 ft. 6 in 23-Car, 100 passenger ferry, named the M/V 


NAT Common Share Offering a Success

Image credit NAT

Nordic American Tankers Limited (NAT) informs that its offering of 12,000,000 common shares, at a public offering price of $8.62 per share, was exercised in full by underwriters, and in accordance with the option granted to them by the Company they purchased an additional 1,800


Drydocks World to Build Jack-Up Drilling Rigs

Image Courtesy Drydocks World

Drydocks World, an international service provider to the maritime, oil and gas and energy sectors, announced it has signed an Agreement with Malta Oil & Gas Ltd. for building two unique new jack-up drilling rigs based on Gusto MSC CJ54-X135-A design


 
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