Trawling for Scrap Metal

by Alan Haig-Brown
Thursday, May 26, 2011
File Drawings courtesy of Rodriguez Boat Builders
Drawings courtesy of Rodriguez Boat Builders

It looks like a typical Gulf of Mexico double-rigged shrimp trawler. However at 110 by 28-ft she will be bigger 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 is at the site of a decommissioned 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 2 certified engines turning into Twin Disc #MGX-5321 gears, with 5.96:1 ratios, power the boat. As installed in the new vessel these mechanical tier 2 engines are each rated for 850 hp at 1800 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 foot 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.
 
Email AddThis Feed Button
Maritime Reporter May 2013 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Shipbuilding

Keel Authenticated for Ingalls’ Fifth National Security Cutter

Huntington Ingalls Industries' (HII) Ingalls Shipbuilding division authenticated the keel of the company's fifth U.S. Coast Guard National Security Cutter, James (WMSL 754).

USCG Contracts HII to Build Sixth National Security Cutter

The U.S. Coast Guard awarded a fixed‐price incentive firm target contract valued at approximately $487.1 million to Huntington Ingalls Industries for the production

Conrad Shipyards Earn Two Safety Awards

Conrad Shipyard, L.L.C. has received the 2012 Award for Excellence in Safety as well as the Award for improvement in Safety by the Shipbuilders Council of America (SCA).

Vessels

Get on Board with Shipyard Electrical Safety

After teaching electrical safety for many years, one tends to understand the regulations, and the standards more than the average safety professional.  We live them most every day.

USCG Contracts HII to Build Sixth National Security Cutter

The U.S. Coast Guard awarded a fixed‐price incentive firm target contract valued at approximately $487.1 million to Huntington Ingalls Industries for the production

Coast Guard Patrols with New RB-S II Vessel

Most people who encounter the Coast Guard near shore will get a good look at a Response Boat-Small (RB-S). With more than 400 boats in operation, the RB-S is the

 
 
mobi | rss feeds | archive | history | articles | privacy | contributors | top news | about us | copyright