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.
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.
National Fisherman Live: 10/7/14
In this episode, National Fisherman Publisher Jerry Fraser talks about the 1929 dragger Vandal.
National Fisherman Live: 9/23/14
In this episode:
'Injection' plan to save fall run salmon
Proposed fishing rule to protect seabirds
Council, White House talk monument expansion
Louisiana shrimpers hurt by price drop
Maine and New Hampshire fish numbers down
NOAA and its fellow Natural Resource Damage Assessment trustees in the Deepwater Horizon oil spill have announced the signing of a formal Record of Decision to implement a gulf restoration plan. The 44 projects, totaling an estimated $627 million, will restore barrier islands, shorelines, dunes, underwater grasses and oyster beds.
The Golden Gate Salmon Association will host its 4th Annual Marin County Dinner at Marin Catholic High School, 675 Sir Francis Drake Blvd., Kentfield on Friday, Oct 10, with doors opening at 5:30 p.m.