Synonyms for flotation compartment can vary depending on the specific context and industry. Some possible alternatives might include buoyancy chamber, life-saving pod, float tank, life raft, or even just buoyancy device. In the world of boating and marine engineering, flotation compartments are an important safety feature designed to keep vessels afloat in the event of an emergency or accident, so the terminology used to describe these compartments often reflects their life-saving function. Other possible synonyms or related terms might include flotation devices, emergency flotation systems, or even just floatation jackets or vests. Ultimately, the choice of terminology will depend on the specific industry, application, and intended audience for the product or service in question.