This is the 13381st most frequent Russian word.
надводный
"Надводный" means "above-water" or "surface-level."
The word 'надводный' is used to describe something situated above water, emphasizing its above-water properties.
Этот корабль является надводным объектом.
This ship is a surface object.
Here, 'надводная' specifies the portion of the island that is above the water surface.
Надводная часть острова покрыта растительностью.
The above-water part of the island is covered with vegetation.
The term 'надводный' describes the transport as designed for use above water, indicating its function and domain.