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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


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


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


Matson Orders Two ConRo Ships from NASSCO

Artist rendering of Matson Kanaloa Class vessel. Courtesy General Dynamics NASSCO (Image: Matson, Inc.)

Matson Navigation Company, Inc., a subsidiary of container shipper Matson, Inc., has signed a contract with U.S. shipbuilder General Dynamics NASSCO to build two new combination container and roll-on/roll-off (Con-Ro) vessels for its Hawaii fleet at a contract price of $511 million for both


Liftboat Jinshan 1 Delivered

Photo: A. K. Suda

A 97.5m truss-legged liftboat designed by A. K. Suda (SUDA) has been completed and is being delivered to its owner, following on the heels of a 91.5m truss leg liftboat delivered earlier this year. Built by Triyards Marine for Swissco Offshore


MN100: All American Marine, Inc.

(Photo: All American Marine)

The Company: All American Marine Inc. was founded in 1987 and specializes in the construction of custom tailored aluminum boats from 30 to 150 feet LOA. Today, the company has become a leading builder of high speed passenger catamarans, survey craft, and research vessels


MN100: Gladding-Hearn Shipbuilding, Duclos Corporation

Photo: Gladding-Hearn Shipbuilding

The Company: For more than 60 years, Gladding-Hearn Shipbuilding has built steel and aluminum commercial vessels. Located on 6.5 acres on the deepwater Taunton River in Somerset, Mass., the family-owned and operated shipyard counts more than 417 vessels built as proof of its longevity and vessel


Eastern Delivers Escort Tug to Suderman & Young

(Photo: Eastern Shipbuilding Group)

On July 29, 2016, Eastern Shipbuilding Group, Inc. delivered Oceanus (Hull# 240), the third in series of four identical Robert Allan, LTD. (RAL) designed Z-Tech 2400 Class Terminal & Escort Tugs built for Suderman & Young Towing Company at Eastern’s Nelson Street facility.  


MN100: Brunswick Commercial and Government Products

Photo:  Brunswick Commercial and Government Products

The Company: Brunswick has been in the business of building boats for commercial and military applications for more than fifty years. From its beginnings as an arm of the legendary Boston Whaler brand to now – part of Brunswick Corporation


Philly Shipyard to Pay Extraordinary Dividend

Photo Philly Shipyard

In its second quarter report Philly Shipyard ASA announced that additional extraordinary dividend would be paid following the deliveries of Hulls 024 and 025. Subsequent to the delivery of Hull 024 to Crowley and the buy-out of the Company's joint venture interest in that vessel by Marathon


Eastern Launches Towboat for IWL River

Impala Puerto Salgar (Photo: Eastern Shipbuilding Group)

Eastern Shipbuilding Group, Inc. has launched the second vessel in a series of four new inland river towboats for IWL River, Inc. The newly built vessel, Impala Puerto Salgar (Hull #244), was launched on August 2, 2016.   The series of CT Marine designed 134 ft


TEN Delivers Aframax Tanker

Image: Daewoo Mangalia Heavy Industries

 Tsakos Energy Navigation (TEN Ltd) has announced the delivery of the Aframax crude tanker "Thomas Zafiras" from Daewoo Mangalia Heavy Industries which will immediately enter a long term contract to a Northern European charterer that could generate gross revenues in excess of $100


Submarine Indiana Pressure Hull Complete

Photo by Chris Oxley (HII)

 Huntington Ingalls Industries (HII) announced that its Newport News Shipbuilding division has reached a milestone in the construction of the submarine Indiana (SSN 789). The 16th Virginia-class submarine has reached “pressure hull complete


Selektope Enters Antifoulings Mainstream

Photo courtesy of Selektope

The first branded marine coatings to feature the antifouling ingredient Selektope have been launched by coatings major Chugoku Marine Paints, Ltd. (CMP).   Developed by I-TECH AB, Selektope’s pharmacological action is unique in the marine antifouling application


New Surface Effect Ship from AMC

Image: AMC

New surface effect ships designed and built specifically for the CTV and working vessel high speed market   Specialist aluminum boatbuilder, Aluminium Marine Consultants (AMC), has added a new surface effect ship (SES) design to its portfolio which is designed by Norway’s Espeland and


Harris Pye to the Rescue for Damaged Hull Repair

Shell plating after repair from inside aft peak tank (Photo: Harris Pye)

Timing is all-important when repairs to a busy drillship are the order of the day. When Pacific International Drilling West Africa’s (PIDWAL) drillship Pacific Bora suffered damage to the starboard aft hull off the coast of Nigeria, PIDWAL called for assistance from the Harris Pye


SS United States Will Not Return to Service

SS United States sits out of commission in Philadelphia. (Photo: SS United States Conservancy)

A comprehensive technical feasibility study has determined the SS Unites States to be structurally sound, but a number of insurmountable obstacles will keep America’s Flagship from returning to seagoing service. In February, Crystal Cruises reached a deal with the SS United States


Workboat Spotlight: Russian Tugs from Pella Shipyard

Courtesy of Pella Shipyard

Russia’s Pella Shipyard advertises a range of five ASD tugs. Their model 90600 has proven popular with customers returning for sister ships. Currently the yards has one of these handy-sized 25.4 by 8.8-meter tugs under construction for the ship and submarine builder JSC Admiralteiskie Verfi






 
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