As of January 2007 all new-built vessels for service in US waters are required to be powered with engines that meet the US Environmental Protection Agency's Tier 2 emission standards. It has been a significant engineering and logistics challenge for the nation?s engine manufacturers to meet these deadlines. Cummins Marine was able to meet the deadline and is shipping Tier 2 engines in the full horsepower range. Although Tier 2 is a requirement for all new vessels, at Olympic Tug and Barge the owners, Harley Marine Services, have shown leadership by installing a pair of Tier 2 compliant engines in their 1970-built tug Lela Joy. This will make her one of the most environmentally progressive vessels on the Pacific coast.