The Boats & Gear blog is overseen by our Boats & Gear editor, Michael Crowley. It explores new construction projects, electronics, gear and equipment for the commercial fishing industry.
Written by Jes Hathaway
Thursday, 31 October 2013
Rolls-Royce's new integrated prop and rudder retrofit package could cut the fuel bill for boats approaching factory-trawler size.
The first installation of Rolls-Royce’s Promas Lite on a commercial fishing vessel should be completed by the first of November at Vigor Shipyard in Seattle. The vessel is the 376-foot factory trawler Alaska Ocean owned by Seattle’s Glacier Fish.
There are three elements with a Promas Lite retrofit. A stainless steel hubcap goes over the propeller hub, while behind it is a prefabricated bulb that’s attached to the existing rudder. Then the propeller is either rebladed or replaced by one that allows maximum loading on the blade tips.
Put them all together and you have a streamlined waterflow across the rudder, as well as behind it. That results in increased propeller thrust, fuel reduction of 5 to 15 percent (It’s near the lower end of the scale when towing), and a reduction in emissions. It’s also possible that a reduced engine load will reduce the wear on the engine.
Promas Lite can go on single- and twin-screw vessels. While it has been installed on a number of cruise ships, this is the first commercial fishing vessel installation. The payback period should be two to three years.
The following was released by the Maine Department of Marine Resources on Jan. 22:
The Maine Department of Marine Resources announced an emergency regulation that will support the continued rebuilding effort in Maine’s scallop fishery. The rule, effective January 23, 2016, will close the Muscle Ridge Area near South Thomaston and the Western Penobscot Bay Area.Read more...
Louisiana’s Department of Wildlife and Fisheries, which governs commercial and recreational fishing in the state, got a new boss in January. Charlie Melancon, a former member of the U.S. House of Representatives and state legislator, was appointed to the job by the state’s new governor, John Bel Edwards.
Although much of his non-political work in the past has centered on the state’s sugar cane industry, Melancon said he is confident that other experience, including working closely with fishermen when in Congress, has prepared him well for this new challenge.Read more...