Page 60: of Maritime Reporter Magazine (March 2000)

Feature Vessel of the Month - PRT Alert

Alert in Valdez Harbor & Associates, and was constructed at

Dakota Creek Shipyard in Anacortes,

Wash, for Vessel Management Services, a Crowley Maritime Corp. subsidiary that owns and leases vessels. Encom- passing an oil spill recovery and storage capability for up to 43,000 gallons of recovered oil, the tugs' design features include Schuyler fendering, and a

Markey TDS-40 towing winch.

Designated primarily for tanker and general towing, the tug is equipped to serve as an emergency spill response vessel. Outfitted with two Desmi skim- mer units, two 1,800 ft. oil spill contain- ment boom reels and two Kvichak

Marine 20 ft. (6 m), 250-hp aluminum oil spill response skiffs, the tug also holds double protective wing tanks of

B/12 minimum breadth — provided for the complete length of the engine room.

Two firefighting foam concentrate tanks are able to hold approximately 4,700 gallons each, are installed over and above the ABS FFV1 requirements. (Continued on page 62)

Alert Main Particulars

Flag U.S.

Classification ABS

Builder. .Dakota Creek Industries, Anacortes, Wash.

Length 140 ft. (42.6 m)

Breadth 42 ft. (12.8 m)

Depth 20 ft. (6 m)

Light draft 16 ft. (4.8 m)

Loaded draft 2 lft. (6.4 m)

GT 845

Fuel capacity 145,000-gallons

Potable water 9,200-gallon

Lube oil 3,900 gallons

Main engines 2 Caterpillar 3612-b

Aux. engines 2 Caterpillar 3306 DITA

Propulsion Vickers Ulstein Marine Systems

Horsepower 10,192

Firefighting system ABS FFV Class 1

Recovered oil capacity 43,5000-gallons

Forward windlass Markey

Towing winch Western Machine Works

Bollard pull 300,000-lbs.

Speed 16.4 knots

Radar Furuno

Gyrocompass Robertson

GPS Northstar

Crowley Marine Services recently accepted the delivery of Alert — the first of a trio of new 140 ft. (42.6 m), 10,192-hp Prevention and Rescue

Response Tugs (PRT's) under contract with the Alyeska Pipeline Service Com- pany for use in both Valdez Harbor and

Prince William Sound, Alaska.

The general purpose PRT's are pow- ered by twin Caterpillar 3612B engines generating the combined 10,192-hp dri- ving two Kamewa Aquamaster azimuthing thrusters. The tugs are also equipped for firefighting, emergency response and oil spill recovery. Recent sea trial proved that Alert was able to generate a certified bollard pull of 300,000-lbs., and a free running speed in excess of 16 knots.

The entire PRT "p trio was designed t by Guido Perla mm