Page 14: of Marine News Magazine (June 2011)

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BOAT OF THE MONTH

It looks like a typical Gulf of Mexico double-rigged shrimp trawler. However at 110 ft by 28 ft she will be big- ger than most shrimpers. Like her sister, the Poncho, delivered in 2009, the new vessel is also built with robust framing and extra power. Like the Poncho, the as yet unnamed vessel, will be trawling for scrap metal, old tires and any other scrap at the site of a decomissioned oil rig.

The work, mandated by U.S. Mineral Management

Services in 1990, requires the site to be cleaned to the point that it can be safely trawled by typical Gulf shrimp gear. To get the site to this level of cleanliness the vessel owners, B & J Martin, use their proprietary Gorilla Net.

The gear employs a weave of 3/4-inch combination cable at the opening with a body made of twine five-times the strength of a standard trawl net. The boat tows two of these 80-ft nets each capable of recovering up to six tons of waste. To manage a “catch” of this magnitude requires a lot of power. For this work, a pair of Cummins K38-M

EPA Tier II certified engines turning into Twin Disc #MGX-5321 gears, with 5.96:1 ratios, power the boat. As installed in the new vessel these engines are each rated for 850 hp at 1,800 rpm. Deck winches include a CME

Model 2FH-505-038-579 double drum hydraulic as well as a CME Model 1A11-100A3-1-00 single drum hydraulic anchor winch. The boat, designed by Joseph

Rodriguez and built by Rodriguez Boat Builders, has a 3,000 cubic ft hold capacity. Tankage is provided for 30,000 gallons of fuel in seven separate tanks. Another three tanks hold up to 8,000 gallons of water, while two more tanks hold up to 750 gallons of lube oil.

Trawling for Scrap Metal 14 MN June 2011

Drawing courtesy of Rodriguez Boat Builders