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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


General Dynamics AUV Detects Threats to Ship Hulls

HAUV is a two-man-portable hovering AUV designed for ship hull inspection. Photo GD

General Dynamics Mission Systems featured the Bluefin Robotics hovering-autonomous underwater vehicle (H-AUV) at OCEANS 2016 in Monterey, California. The Bluefin Robotics H-AUV locates, identifies and maps structural issues on a ship’s hull including large ocean going cargo ships


Damen to Launch Composite Water Bus

(Photo: Damen)

Damen said it is set to launch its first composite Water Bus as the prototype undergoes sea trials in the next few weeks.   According to the shipbuilder, the new vessel offers reduced fuel consumption, less maintenance, no corrosion or fatigue problems and is very robust


Ecospeed Pays Dividends for Interscan

The 3000dwt general cargo vessel Patriot was coated with Ecospeed in 2005 Photo Ecospeed

Trading in ice is the toughest challenge for a hull coating. Regular anti-fouling paints or simple epoxies are usually scraped off by the constant abrasion of the ice, and extra drydockings are needed to repaint, often after just one season.


Con-Green 2000 - Next Generation of Feeder Vessels

Image: DNV GL

 The largest container vessels are designed for the greatest possible efficiency – maximum intake, minimum fuel consumption. Their smaller cousins, however, have not received the same level of attention – but this is beginning to change, says Jai Oh Sun, Engineer / Pre-Contract


MN100: RIBCRAFT

(Photo: RIBCRAFT)

The Company: RIBCRAFT designs and builds safe, durable, performance oriented rigid inflatable boats (RIBs) that fulfill the most demanding military and professional applications. With over twenty-five years experience, RIBCRAFT provides high quality professional grade RIBs and inflatables for


Euroseas Cancels Ultramax Newbuild Order

Euroseas Ltd., an owner and operator of dry bulk and container carrier vessels, has cancelled its order for an Ultramax dry bulk vessel under construction at Dayang yard due to excessive construction delays.   The vessel, Hull Number DY 161


RAstar 3200 for Mauritius Ports Authority

RAstar 3200 for the Mauritius Ports Authority

Robert Allan Ltd. has added yet another vessel to its popular RAstar 3200 Series design, this one constructed by Hong Kong’s Cheoy Lee Shipyards for the Mauritius Ports Authority. The RAstar 3200 terminal support tug, Sir Edouard, was delivered August 21


Partnership Yields Next-gen Versatile Workboats

Image: AMC

Naval Architect John Kecsmar of Ad Hoc Marine Designs is now working with Aluminium Marine Consultants (AMC) to offer a range of uniquely designed, versatile SWATH workboats.   Kecsmar possesses many decades of experience working and designing in shipyards in all things high-speed and is a


MAN's G-Type Engine Notches 1,500 Orders

Illustration of the G80ME-C9 engine (Photo: MAN Diesel & Turbo)

Just six years after its introduction, MAN Diesel & Turbo has confirmed an order for the 1,500th G-type engine. Greek ship operator, Almi Tankers, will take delivery of the ultra-long-stroke 7G80ME-C9 type as prime movers for the two 317


Crewboat Delivered to Caspian Marine

Photo courtesy of Incat Crowther

Built Built by Austal Ships, Rashid Behbudov, sistership to the Muslim Magomeyev and the second Incat Crowther 70m Catamaran Fast Crew Boat, has been delivered for Caspian Marine Services.   Muslim Magomayev, the first of this design developed by Incat Crowther


Navy Christens Littoral Combat Ship Wichita

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The Navy will christen its newest Freedom-variant littoral combat ship, USS Wichita (LCS 13), during a 10 a.m. CST ceremony Saturday, Sept. 17 in Marinette, Wisconsin. Wichita, designated LCS 13, honors the city of Wichita, Kansas. Sen


Antifouling Copper Approval Ensures Savings, Performance

Photo: Jotun

Jotun believes the European Union’s decision to approve the use of copper in marine antifoulings will ensure continued delivery of powerful benefits for both the shipping industry and environment. Copper is a key ingredient of most antifouling coatings


Marine Premiums Drop 10%, Could get Worse

Patrizia Kern (Chairman)

The International Union of Marine Insurance – unveiling its annual statistical report on the marine insurance market at today’s conference in Genova, announced global underwriting premiums for 2015 of USD 29.9bn. This is a 10.5% reduction on the 2014 figure.


First Carrousel-RAVE Tug Under Construction in Hamburg

Photo: Robert Allen Ltd.

Construction of the first Carrousel-RAVE tug has begun at Theodor Buschmann Shipyard in Hamburg.    This novel design features the Robert Allan Ltd. and Voith Turbo GmbH & Co. KG developed RAVE propulsion with drives arranged inline along the centreline of the hull


Sirius Orders Two Oil/Chemical Tankers

Photo courtesy of Sirius

Sirius Shipping AB has ordered two oil/chemical tankers with the latest technology and in compliance with future rules and regulations, such as Tier III, at Avic Dingheng shipyard.   This is the 5th project that FKAB signes in less than a year, on a tanker project






 
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