Alert in Valdez Harbor

Thursday, March 09, 2000
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 Company for use in both Valdez Harbor and Prince William Sound, Alaska. The general purpose PRT's are powered by twin Caterpillar 3612B engines generating the combined 10,192-hp driving 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 trio was designed by Guido Perla & 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. Encompassing 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 skimmer units, two 1,800 ft. oil spill containment 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. Accommodating 16 people including spill response personnel in two single, five double and one quadruple berth staterooms, remaining accommodation spacing are situated with a galley and pantry with cold storage, ship's office and decontamination station. Responsible for the design of this vessel series is Seattle-based naval architectural firm Guido Perla & Associates (GPA), who took the responsibility for regulatory compliance by entering plans to ABS for U.S. and International Tonnage Certificates. The firm's engineers worked to perform the structural and mechanical calculations, electronic load analysis, and short circuit analysis and drew up a fire and safety plan. GPA engineers also created composite drawings with machinery and wiring layouts and piping routing for the equipment, ensuring that construction and operational maintainability was free of interference. Prior to construction, an automated layout of the vessel confirmed mechanical capability, while ensuring a working view of towing operations from the pilothouse. This 3-D computer model of the complete design was formulated using the latest releases of AutoCAD, Rhino, AccuRender, as well as GPA-developed software. Exporting this computerized information to GPA's 40-station network allowed for development of hull scientific, structural, mechanical and electrical designs. The company provided lines fairing, lofting and numerical control NC tapes for automated burning and marking of individual parts.
Maritime Reporter July 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Navigation

Google Maps Goes Coastal with Unmanned Boat

A new high-tech unmanned vessel, launched with the help of Google, will use innovative technologies from the boatbuilding and mapping fields to map shorelines and

Korean Registry Okays Transas ECDIS

Transas, one of the world's leading providers of integrated navigation solutions, received ECDIS type-approval from the Korean Registry (Korea Marine Equipment Research Institute),

MOL Wins Eco Awards in California

Mitsui O.S.K. Lines, Ltd. earned recognition from the ports of both Los Angeles and Long Beach, California, today, for its efforts to ensure compliance with

 
 
Maritime Security Naval Architecture Offshore Oil Pipelines Port Authority Salvage Ship Electronics Shipbuilding / Vessel Construction Sonar Winch
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1315 sec (8 req/sec)