Photo Credit: Dakota Creek Industries Inc.
The U.S. Navy’s new fleet of six 90 foot by 38 foot 3 inch YT 808-class tugs are its first built to meet the EPA Tier 4 Final diesel engine emission regulations. Each is powered by twin Cat 3512E marine engines, each rated at 1,810 horsepower. The engines drive two Schottel SRP 340 fixed-pitch Z-drive thrusters providing a top speed of 12.5 knots and an expected bollard pull of 40 metric tons.
The tugs are being built by the Dakota Creek Industries shipyard in Anacortes, Wash. The first was launched earlier this year in October after completing the last construction phase.
Maritime Activity Reports, Inc.
(Photo: Dakota Creek Industries)
Built by Dakota Creek Industries in Anacortes, Wash., the first of the U.S. Navy s new fleet of six YT 808-class tugs was delivered in October after completing the last construction phase. Measuring 90 feet long and 38 feet 3 inches wide, the YT 808 vessel is powered by twin Cat 3512E marine engines, each rated at 1,810 horsepower. The engines drive two Schottel SRP 340 fixed-pitch z-drive thrusters providing a top speed of 12.5 knots and an expected bollard pull of 40 metric tons.
The new series of Robert Allan Ltd.-designed tugs are the Navy s first vessels built to meet the U.S. EPA Tier 4 Final diesel engine emission regulations. The use of the 3512E engines will drastically reduce emissions at the naval installations where they operate. The YT 808 s will replace the Navy s 45 – 55-year-old YTB class tugs at the Portsmouth Naval Shipyard in Maine and the Pacific Northwest.