Manoeuvring © BCP Ltd., IOM (C002)

This module allows the designer to assess the manoeuvrability of a surface ship at any stage of design. The underlying calculations are performed by the MATHMAN software developed by BCP Ltd., Isle of Man, UK. MATHMAN has been developed from published data on systematic model tests and in-house theoretical models.

Manoeuvring performance can be assessed for numerous vessel propulsion and appendage types including Azipod-type drives, and vertical-axis propulsion (e.g. Voith Schneider units).

Arbitrary manoeuvres can be performed, as well as standard turning circles and zig-zags. Simulation control can be executed by several methods including: Pre-determined engine and rudder command history, Autopilot and synthesised helmsman.

A wide range of basic output is available to the user, examples include rudder angle, engine rpm and ship speed/rate time histories.

More advanced diagnostic information is also available for use with more in depth manoeuvring studies.

Trimaran Manouevring

The program TRIMAN has been developed by Burness, Corlett & Partners from their all purpose manoeuvring program MATHMAN to provide a sophisticated and flexible tool for the simulation and analysis of Trimaran manoeuvring. The analytical engine of TRIMAN includes an advanced semi-empirical method of solving the equations of motion, which coupled with a unique range of input, control and output options, enables most manoeuvres to be predicted.

TRIMAN has been developed from published data on systematic model tests, in-house theoretical models and model tests carried out on trimaran forms. Four coupled non-linear equations are solved for each hull and are then resolved into four simultaneous differential equations, which TRIMAN solves in the time domain, using the Runge-Kutta Classical Fourth Order Method.