A sea trial is basically carried out to confirm that the craft being considered does actually perform, whether under sail or power, as it is supossed to do. We test engines, the steering, controls, shafting, engine mounts and exhaust systems as well. When a sailboat is being surveyed, the overall sailing systems are also tested.
It is strongly recommended to perform a sea trial to measure the boat’s performance and to reinforce the findings or recommendations from the initial inspection.