Answer: waterlines

AnswerCrossword Clue
WATERLINESPlimsoll marks.
waterlinesA vertical watermark made in laid paper
waterlinesThe level reached by the sea or a river visible as a line on a rock face, beach, or riverbank
waterlinesAny of a set of structural lines of a ship, parallel with the surface of the water, representing the contour of the hull at various heights above the keel and drawn on shipbuilding plans
waterlinesThe line to which a vessel's hull is immersed when loaded in a specified way
waterlinesWATERLINE, any of several lines on a ship to which it is submerged under different conditions of loading