Risk Analysis of Ships Manoeuvres Carried Out on the Basis of Integrated Navigation Systems (INS) Indications

In the safety evaluation of manoeuvres carried out on the basis of INS indications, the real ship's dimensions are used to determine navigation safety level. The paper presents a new approach to this problem. The ship's maneuvering area and collision probability were calculated incorporating uncertainty areas of ship's plan geometry at given probability level for typical configuration of navigational equipment applied in existing pilot systems. The widening coefficients of safety factors for each configuration set were determined and discussed. The most economically advantageous configuration of navigation system was chosen.