ватерлиния
1) береговая линия 2) уровень подземных вод 3) уровень воды (в котле, цистерне) 4) ватерлиния
noun a line that marks the level of the surface of water on something: as a. (1) the point on the hull of a ship or boat to which the water rises (2) a line marked on the outside of a ship that corresponds with the water's surface when the ship is afloat on an even keel under specified conditions of loading b. shoreline 1