National Fisherman

Boats & Gear 

BG image 9.8.16The Boats & Gear blog explores new construction projects, electronics, gear and equipment with contributions from Jean Paul Vellotti (NF B&G editor) and Michael Crowley (former B&G editor).

2013 1031 PropRolls-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.

Inside the Industry

It’s no secret that fraud is a problem in the seafood industry. Oceana repeatedly touts a mislabeling epidemic. While their method has been criticized, the perception of rampant fraud  has been established.

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The Center for Coastal Studies recently announced that Owen Nichols, Director of the Center for Coastal Studies’ Marine Fisheries Research Program, has been selected as this year’s recipient of the John Annala Fishery Leadership Award by the Gulf of Maine Research Institute. 

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