LARGE AMPLITUDE PMM TESTS AND MANEUVERING PREDICTIONS FOR A MARINER CLASS VESSEL

This paper describes the results of Planar Motion Mechanism (PMM) tests with a 6 1/2 m model of the USS "Compass Island" and a comparison of full-scale trial and simulated maneuvers. The first part of the paper describes the results of tests made with 15 knots approach speed, the speed at which most full-scale trials were made. The general philosophy behind the design of the test program is expounded and the measured values together with the analytical expressons which represent them in the mathematical model are given. The second part of the paper contains the full-scale trial and simulated maneuvers, and a discussion of the similarities and differences.