On the stability criteria for the fishing vessels

The safety problem against ship's capsizing is still now of great importance particularly for small vessels. This is drammatically pointed out, as recorded in the last years, by the frequent casualties of fishing vessels and car ferries with following loss of human lives.The present paper deals with a method for the quickly determination of the ship stability characteristics both in the preliminary design stage and in the operational stage of a fishing vessel.The proposed method provides the possibility both of judging the effects on stability of several shape's parameters and also to determine the top vertical center of gravity position in any load ship's conditions according to the I.M.O. criterion.The proposed methodology derives from the results obtained and explained in previous papers that dela with the determination of the geometrical parameters involved in the stability calculations related to the systematic series hulls.