Analysis of a submarine manoeuvrability by numerical PMM tests

In this paper numerical computations dedicated to the analysis of the maneuvering behavior of a fully appended submarine are presented. The work presented here is part of the CNR-INSEAN activities scheduled in the framework of a joint Italian and Norwegian MoDs project, with the partnership of MARINTEK, under the egida of the European Defence Agency. The aim of the numerical work is to exploit the effect of cruciform and X rudder configuration on the course stability qualities of the submarine in two operation conditions, namely open water and close to the free surface.