Sea trials are an important step within the boat buying process that allows you to take a boat for "test run. A sea trial or trial trip is the testing phase of a watercraft (including boats, ships, and submarines).It is also referred to as a shakedown cruise. Sea trials are a crucial procedure before a vessel leaves the port on its maiden voyage because it determines how safe the crew and passengers onboard are. Sea trials of a newly built ship are important to ensure the overall safety of the ship, the crew and the cargo. Sea trials are carried out under a variety of circumstances. Sea trials are important for all newly built ships. Check out ten important tests that are carried out to ensure vessel safety. Also, it depends if you're going to be motoring the boat or sailing the boat as well. A complete range of trials is carried out on a ship when complete to confirm that the ship meets its specification.