Technical Evaluation of the 60 Foot Small Waterplane Area Twin Hull (SWATH) Ship HALCYON

摘要

A technical evaluation of the 60 foot SWATH ship HALCYON built by RMI, Inc., National City, California was conducted by the Coast Guard Research and Development Center. Ship motions were measured aboard the vessel in five headings relative to the 7.4 foot significant seas while cruising at 17.5 knots and in head and beam seas while dead in the water. Ship response amplitude operators (RAOs) wer computed for roll, pitch, and heave motions. Ship motions are compared between the HALCYON and an 82' Coast Guard Patrol Boat (WPB) in the same 5 foot sea state using RAOs. Calm water engine horsepower and fuel consumption data were collected, along with towing, bollard pull, noise levels, maneuvering and tactical data. Conclusions are presented on the utility of SWATH ships for rough water area operations in support of Coast Guard patrol boat missions. Keywords: SWATH, HALCYON, SD-60, Technical evaluation, Seakeeping, Tactical data. (jes)