A flying boat is a kind of fixed-winged seaplane having a hull that lands on water. People often use a flying boat and floatplane interchangeably. However, these are two different transportation modes. The fuselage in flying boats is mainly designed for floatation and comes with a hull. On the other side, floatplanes work on fuselage-mounted floats for buoyancy. The main purpose of the fuselage is to provide buoyancy. To know more about flying boats you can visit here:- https://ukjournal.co.uk/flying-boats/