Is the fitter going to test the water?

Don't. Trial refers to the trial of a ship after its manufacture, maintenance or modification, so as to ensure that the performance and safety of the ship meet the relevant standards and regulations. During the trial, the ship will generally be led by professional trial personnel or crew, including the captain, chief engineer, sailors and so on. The fitter's main job is to carry out fitter's work in the process of ship manufacturing, maintenance or modification, including metal processing, welding, disassembly and installation of the ship. Therefore, assemblers generally do not need to participate in the trial, but they need to abide by the relevant safety regulations and procedures to ensure the safety and performance of the ship.