Caterpillar Inc. has launched its new 3034 DIT, 3034 DINA, 3054 DIT and 3054B DINA marine propulsion engines. The 3034, 3054 and 3054B engines are designed to offer outstanding reliability and durability in a very compact package size. Expanding upon the Cat 3000 line of engines introduced in 2000, these versatile, powerful engines can be applied in single or twin-engine workboat, fish boat, passenger ferry, patrol craft, sailboat or pleasure craft applications. Caterpillar initially offered the 3056 propulsion engine as the first in a new line of compact, fuel-efficient marine propulsion engines based on an environmentally friendly, in-line six-cylinder, four-stroke cycle diesel design.