Propellers propel ships to move in a straight line, and rudders change course. It is very important for the operator to understand the ship's maneuvering performance. The maneuvering performance test evaluates the ship's ability to maintain and change course and turn.
Manoeuvring Test
The Planar Motion Mechanism (PMM) test is used to estimate the ship's maneuvering performance (the ship's motion associated with steering such as turning, holding course, and changing course). By restraining the model ship and applying constant motion, the fluid reaction force acting on the hull is measured to obtain the differential coefficient of maneuvering hydrodynamic force (coefficient of maneuvering equations of motion).
We use a free-running model ship to confirm the maneuvering motion by direct steering. We also perform highly accurate measurements of turning radius and overshoot angle in the zig-zag test by recording the wake using an automatic wake tracking and measuring system.
