Crowley Delivers Second Of Three Part Tug Series

Crowley Marine Services has delivered Attentive, the second of three 140- ft. (42.6 m), 10,000-hp Prevention and Response Tugs (PRTs), to Alyeska Pipeline Service Company in Valdez, Alaska. Attentive and its pair of sisterships - Alert and Aware - will be used by Crowley in the Trans Alaska Pipeline System trade. Alert was deployed in February; Aware is scheduled to be delivered this month. The PRT trio will join Alyeska's Ship Escort Response Vessel System (SERVS), serving as tanker escorts in Prince William Sound. During its sea trials, Attentive generated a bollard pull of 305,000-lbs. and running speed of 17 knots. Equipped for firefighting, emergency response and oil spill recovery, all three PRTs are powered by twin Caterpillar 3612B engines generating the combined 10,192-hp driving two Kamewa Aquamaster azimuthing thrusters.

The tugs' design scope was developed by Seattle-based Guido Perla and Associates; construction occurred at Dakota Creek Shipyard in Anacortes, Wash, for Vessel Management Services - a subsidiary of Crowley Maritime that owns and leases vessels. Design features include accommodations for up to 16 personnel, Schuyler fendering, a Markey TDS-40 towing winch, 3,000 ft. of oil recovery boom and on-deck stowage for two oil spill recovery skiffs.