The term 'slow-moving boat' can be summarized as a boat that moves at a slow speed. This type of boat is often used for leisurely activities such as fishing, sightseeing, or simply enjoying the scenery. The crossword solution for this term is 'TUB', which is an acronym for 'Towed Unpowered Boat'. This type of boat is towed behind a powered vessel and is not self-propelled. It is typically used for recreational purposes and is designed to move slowly.