Page 25: of Maritime Reporter Magazine (November 1992)

WORKBOATS 1992

Outstanding Workboats of 1992

Vessel/Type Main Engines Builder

Recovery l/oil skimmer Caterpiller SEA-FAB, Inc.

M/V Loop Responder/tractor tug Caterpillar North American Shipbuilding

Comandante Cianciulli/fire boat Detroit Diesel Trinity Marine Group

Burrard Cleaner No. 9/oil skimmer Caterpillar MARCO Seattle

Elizabeth Dewey/towboat Caterpillar Avondale Industries

John P. Devaney/fire boat GM Textron Marine

Ashley Alyse McCall/crew boat Cummins Gulf Craft

Michael Luhr/towboat EMD Jeffboat

Al Mutaheda 1/shrimper Caterpillar Bender Shipbuilding

Puget Sound fire boat Kodiak Workboats Northwest

Miss Cynthia/pushboat Detroit Diesel Leevac Shipyards

SIS pilot boat Detroit Diesel Gladding-Hearn

Dauntless/patrol boat Caterpillar SeaArk provide escort and emergency re- sponse to VLCC and ULCC tankers calling at the Louisiana Offshore

Oil Port (LOOP) facility, the Loop

Responder can achieve speeds of 14.5 knots and has demonstrated the capability to stop in less than its own length from full speed.

The Loop Responder measures 155 feet long, has a 51.5-foot breadth, with a displacement of approxi- mately 1,670 long tons. The Voith

Schneider propellers are directly driven by a 3,600 hp (2,650 kW) type 3608 Caterpillar diesel engine run- ning at 1,000 rpm, through hydrau- lic and gear couplings. The tug can generate approximately 80 tons of bollard pull in the dynamic mode and up to 200 tons of bollard pull in the indirect towing mode, unique to

Voith Schneider tractor tugs and necessary for escort vessel work.

Electrical power is provided by two 150 kW Detroit Diesel gensets and a Detroit Diesel unit provides hydraulic power. The towing winch is a Markey type DUSS-71 single drum hawser winch, designed to achieve braking capacity of 500,000 lbs. and a line retrieval of 200 feet/ minute. The towing hawser sup- plied by Whitehill Manufacturing,

Inc., is 1,000 feet of .75-inch diam- eter Spectra fiber synthetic hawser specially designed for high tensile, positive buoyancy and light weight.

The vessel has two Nijhuis, split case horizontal water pumps of 1,000 hp driven off the front end of each main engine, stores 5,000 gallons of liquid firefighting foam onboard and has a Skum model PI-100 around the pump proportioning system and two Skum model MK-250EX/VR- 250-DELF water monitors with a range of 425 feet at 170 psi deliver- ing 7,500 gpm.

The Loop Responder also carries 3,000 feet of 48-inch oil spill con- tainment boom on two separate hy- draulic powered reels, has in-hull storage capacity and a separate pump room to handle 3,000 barrels

Ashley Alyse McCall crewboat from Gulf Craft

Jamaican patrol boat from SeaArk

Pushboat Michael Luhr from Jeffboat

SES fireboat John P. Devaney from Textron Elizabeth Dewey from Avondale Industries

November, 1992 27