YT 808 tugs are Navy's first to meet Tier 4
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...
Source: marinelog.com