aeroplane,
airplane,
plane an aircraft that has a fixed wing and is powered by propellers or jets; "the flight was delayed due to trouble with the airplane"
A sea plane is a fixed-wing aircraft capable of taking off and Water landing (alighting) on water. Seaplanes which can also take-off and land on airfields are a small subclass called amphibian aircraft. Seaplanes and amphibians are usually divided into two categories based on their technological characteristics: floatplanes and flying boats, which are generally far larger and can carry far more.