With a sharp entry, the 60GT with 1,800-horsepower Caterpillar C32s can reach a top speed of 42 knots at 2300 rpm. At 1700 rpm, expect an effortless speed of 30.6 knots while consuming a total of 100 gallons per hour. While testing the standard GT, I found a tough head-sea boat that handled the five- to six-foot seas cruising at an impressive 26 knots. At the time, the 60GT was the first Hatteras built completely with a resin-infused hull. Hatteras uses a solid bottom, and awthartship stringers with PVC core encapsulated in fiberglass. The topsides and superstructure also use PVC core.