Water pass
A water pass is a colored stripe on the construction water line (KWL), in short: water line (CWL = construction water line).
The waterline is the mark up to which a ship is designed to be immersed in the water. This immersion depth depends on the specific weight of the water, especially the salt content. The original task of the water pass was to cover the transition from the underwater painting of the underwater hull to the surface painting of the freeboard .
There are special water pass colors for yachts that are usually in ports for long periods of time. This makes it easier to remove any soiling of the colored stripe while lying down. The width of the water pass varies with the size of the ship. Different immersion depths, especially on cruise ships, can be elegantly absorbed in this way.