This is the 10396th most frequent Russian word.
ватерлинии
"Waterlines" – the lines marking the level of water on a ship's hull.
The word 'ватерлиния' is used to refer to the marked line on the outside of a ship indicating its optimal submersion level in water.
Ватерлиния на корпусе корабля определяет уровень погружения.
The waterline on the ship's hull determines the immersion level.
Here, 'ватерлиния' is utilized metaphorically to depict the boundary line separating the water and sky in artwork.
В художественном рисунке ватерлиния делит море и небо.
In the artistic drawing, the waterline divides the sea and the sky.
In this context, 'ватерлиния' is used to describe the mark left by water levels on the beach.