This paper presents the details of sea trials conducted on a water jet propelled high speed craft. This ship is an Inshore Patrol Vessel fitted with interceptors. The trials were conducted to establish the speed, manoeuvring performance and endurance of the ship. The speed trials were conducted with interceptors and without interceptors and the dynamic trim of the vessel was recorded along with speed. The interceptors contributed to a considerable increase of speed by dynamic reorientation of the ship. Under manoeuvring performance, the turning circle manoeuvre and the crash stop manoeuvre were conducted to establish the turning and stopping characteristics of the ship respectively. The turning characteristics of the ship were established by steering the jet to 30 degrees and completing one full turning circle at maximum continuous rating of the engine. The stopping characteristics were established by conducting crash stop manoeuvre (ahead to astern). For reversing the ship's direction of motion the water jet was reversed by deploying the buckets. The performance of the deck machinery, endurance of engines was also established during the sea trials. The obtained values from various sea trials are presented and compared with the recommendations of the standards. © 2014: The Royal Institution of Naval Architects and IIT Madras.