Shipma

Numerical Autopilot Model

Simulation with an Autopilot model

This is a numerical autopilot model for ship manoeuvring, based on a mathematical model that computes the track and course angle of a vessel reliability providing a high reliability. The system working principle is based on establishing the initial position and the desired trajectory for the execution of an entrance or exit maneuver into a port.The model takes into account the influences of wind, waves, currents, shallow water, and bank suction

The results from simulation allow to assess the viability of a certain entrance or exit route to a port under specific meteorological conditions and determine the best option to execute a maneuver. Shipma defines the need, power and number of tugs to be used, optimizing its services.

This model is applicable to simple cases in early stages of analysis, frequently used to compare alternative infrastructure projects, manoeuvering in different weather conditions and the use of different types and sizes of vessels.

SHIPMA is a “fast-time” autopilot manoeuvring model, different from a real-time bridge simulator. Rudder, engine and tug control is effectuated by a track-keeping auto-pilot that anticipates deviations from the desired track and changes in currents.