Armstrong Delivers Dive Compliance Vessel
The 38 x 13-ft. monohull dive compliance vessel Sentry was recently accepted by the Washington State Department of Natural Resources (DNR) after successful launch and sea trials in Port Angeles Harbor. In a competitive solicitation process last year, DNR selected Armstrong Marine’s proposal to design and build multiple vessels for their Marine Law Enforcement program.Sentry is customized for efficient geoduck fishery management along with other marine law enforcement operations. A 4-ft.
ABB to Equip Seabourn Duo
ABB said it has secured a power and propulsion contract for the two debut Seabourn ultra-luxury expedition vessels.The contract covers two 170-meter length ships due delivery to the Seattle-based cruise company from Italian yard T. Mariotti, in June 2021 and May 2022 respectively.Seabourn has chosen ABB’s power and propulsion technology for the 23,000gt ships that integrates main generators, switchboard, convertors, bow thruster motors and the remote control system in a single package…
Shaft Vibration Eliminated With Vesconite Hilube
After replacing the all-rubber cutlass bearing of his new Jeanneau Sun Fast 35 Tide The Knot two times in seven years, Robert Metzen sought an alternative. A fellow sailor told him about his positive experience with Hilube as a rudder bearing. Shortly after contacting Leandro Panzini from Vesconite distributor VesArg, Metzen had a state-of-the-art polymer bearing installed.At 2,300 rpm, a sailboat engine will spin its propeller shaft a million times in less than eight hours. Cutlass bearing materials such as rubber and bronze wear prematurely.
Alexis Marine To Retrofit Rivertough to Salt Lugger
Louisiana-based inland workboat operator Alexis Marine has awarded a supply contract to Thordon Bearings for the retrofitting of 6in diameter RiverTough bearings to MV Kristin Alexis, the 60ft twin-screw towboat built by Bollinger Shipyard in 1969.Both the vessel’s shafts will be withdrawn at New Orleans yard Bayou Fabricators and Machine Works, where the original rubber bearings will be replaced with Thordon’s RiverTough tailshaft bearings.The polymer bearing manufacturer will…
Thordon to Eqip New Class of Towboat
Thordon Bearings, of Burlington, Ont., has received an order to supply four comprehensive shipsets of stern gear for a new class of towboat.The four boats are being built by U.S. shipyard Master Marine of Bayou La Batre, Ala., for Waterfront Services, based in of Cairo, Ill.. The new vessels have been designed to meet the requirements of Subchapter M, a set of federal rules recently introduced by the U.S. Coast Guard, relating to the inspection requirement for towboats, including seaworthiness standards and safety protocols.The 67ft x 28ft boats…
Washburn & Doughty Wins Hybrid Tug Orders
East Boothbay, Maine based Washburn & Doughty said it has secured a contract with Harbor Docking and Towing, of Lake Charles, La., to design and build two 93’ x 38’ Hybrid Z Drive Tugs. The 93’ x 38’ hull is a proven design with 18 tugs in operation and 4 under construction. The vessel will be built as a Harbor Assist Vessel as defined in USCG Subchapter M and admeasure less than 200 gross tons U.S. regulatory tonnage. Caterpillar Marine will provide a ‘stem-to-stern’ Cat content hybrid propulsion system, with support from both Milton Cat and Louisiana Cat in the sales effort.
Inside Modutech Marine’s Work Boat Medium
The U.S. Navy has some spectacular vessels, from submarines to high speed RIBs. They also have dedicated ports and support facilities worldwide. A practical reality of all of this is that the Navy requires efficient and handy boats to support the warhorses. To meet this requirement John Myers of the naval architect firm Hockema & Whalen and Associates have developed a 30 by 15-foot tug with a 5.5-foot draft. Currently the Navy has 24 of these tugs, designated Work Boat Medium, on order from Modutech Marine Inc. of Tacoma, Wash.
OTI Installs Thordon's Largest TG100 Seal
Offshore Towing Inc (OTI) has completed the refurbishment of its 1974-built 9000hp-class tug Zion Falgout at the Conrad Deepwater shipyard, in Morgan City, La. The milestone project involved the retrofitting of TG100 seals in what marks OTI’s first mechanical shaft seal installation and the largest diameter TG100 series seals ever supplied by Thordon Bearings. An 11.75in (298mm) diameter seal was installed to each propeller shaft of the 66.88t bollard pull twin-screw workhorse.
Another Milestone for RRS Sir David Attenborough Build
Rolls-Royce is marking another milestone on the journey toward the completion of Britain’s new polar research vessel the RRS Sir David Attenborough being built by Merseyside shipyard Cammell Laird. The last of the vessel’s Bergen B33:45 engines/gensets have been craned into the ship’s hull at Cammell Laird ready to be connected to the RRS Sir David Attenborough’s Rolls-Royce propulsion system. The nine cylinder engines are carefully installed in three separate pieces. The first part of the nine cylinder engine to be craned into place was its double resilient foundation.
NOFIRNO Technology for Sealing the Exhaust of a Diesel Power Pack
Diesel generators in the form of ready-made power packs in container format are vulnerable in terms of water tightness, particularly around the diesel generator's exhaust. This is a serious problem in environments such as aggressive sea climates where many offshore power packs are installed. The danger of corrosion is always lying in wait, while any incoming water can also have serious consequences for the reliability of the electrical systems. To prevent this, Beele Engineering supplies exhaust sealing systems based on the NOFIRNO sealing system.
Oil to Water: Impala Tugs Undergo Conversion
The first four of 15 Impala Terminals Colombia-operated tug/tow boats have been converted from oil to water-lubricated tailshaft bearings. Impala Zambrano, the first of 15 triple-screw and twin-screw push boats scheduled for oil-to-water conversion, was retrofitted in July 2015 with a Thordon RiverTough bearing and TG100 shaft seal combination. Three triple-screw and one twin-screw pusher vessels have since been converted and Thordon’s Colombian distributor Delta Marine and River Services will now work on the next vessels in the series.
Master Marine Delivers Z-Drive Tug to Marquette
Marquette Transportation Co. has taken delivery of a new 2,000-hp Z-drive towboat from Master Marine, Inc., Bayou La Batre, Ala. The 78'x 34’x11' St. Simon was designed by Entech Designs, La. for Marquette’s river division, based in Paducah, Ky. Master Marine is continuing to build Z-drive towboats, with one more underway for Marquette with an increased crew capacity of nine in five staterooms with 3.5 bathrooms. The steel-hulled St. Simon is powered by a pair of Thompson Power Systems Caterpillar C32 Tier 3 1…
Giant Cutter Dredger Gearbox Delivered
Customer approval in powertrain technology depends specifically and to a great extent on the reliability and robustness of the facilities and in particular on their individual components. These include the gearbox and gear wheels of the specialist transmission manufacturer, C u. W Keller GmbH & Co.KG (KELLER). The high customer requirements can be met by the custom made gearbox manufacturer Keller with its experience in the design and manufacture of gear wheels and gearbox that spans more than 100 years.
Honda Marine Debuts New 4-stroke Engines
Portability, performance and reliability are the hallmarks of Honda Marine’s new and redesigned portable engine models, the BF4, BF5 and BF6 4-stroke outboards. Honda Marine debuts new engines with the BF4 and BF6 models, and redesigns the legendary BF5 models. Packed with the latest technology from Honda, the 127cc 4-stroke, single cylinder engines offer boaters the choice of four horsepower (BF4), five horsepower (BF5) or six horsepower (BF6). All three new engines are available with either a short (15 inch/38 cm) or long (20 inch/51 cm) shaft.
Master Marine Delivers Z-drive Towboat to Marquette
In July, Marquette Transportation Co. took delivery of a new 2,000-hp Z-drive towboat from Master Marine, Inc., Bayou La Batre, Ala. The 78'x 34’x11' St. Matthew was designed by Entech Designs, La. for Marquette’s river division, based in Paducah, Ky. Master Marine is continuing to build Z-DRIVE towboats, with two more underway for Marquette with an increased crew capacity of nine in five staterooms with 3.5 bathrooms. The steel-hulled St. Matthew is powered by a pair of Thompson Power Systems Caterpillar C32 Tier 3 1…
Another Z-drive Towboat from Master Marine
In December, Marquette Transportation Co. took delivery of a new 2,000-hp Z-drive towboat from Master Marine, Inc., Bayou La Batre, Ala. The 78'x 34’x11' St. John was designed by Entech & Associates, for Marquette’s Gulf-Inland division, based in Harahan, La. The steel-hulled St. John is powered by a pair of Thompson Power Systems Caterpillar C32 Tier 3 1,000-hp engines at 1,800 rpm connected to ZF Marine ZF AT 5111WM-FP Z-drives with 1,650 mm (65") 4-bladed propellers in nozzles. The package gives the boat a running speed of 10 knots with a loaded draft of 8’.
Bearing System Sees No Wear After 20,000 Hours
After nine years of operation in the harsh, abrasive waters of Alaska’s Yukon River, aboard Inland Barge Service’s push boat Ramona, Thordon Bearings’ RiverTough water-lubricated tail-shaft bearing system has emerged completely free of wear and tear, according tot the manufacturer. The performance of the RiverTough bearings in waters renowned for their high content of gritty glacial silt came to light when the 16-meter workboat’s cracked struts underwent repair in dry-dock. Charles Hnilicka…
Compact Genset Muffler Fits Tight Spaces
Fitting a generator and its exhaust system into a new build or a retrofit can be challenging, especially in a confined engine room. Marine Exhaust Systems said it aims to solve the space problem with its new whisper-quiet Series 4 Thinline Wall Pack Generator Muffler. Currently designed for up to 35 kilowatt gensets, the muffler is 12 inches wide, 17 inches tall and four inches deep. Its compact, low-profile size makes it suitable for any marine application, and it can be mounted on the hull side, a bulkhead or within the recess of a generator body.