Plimsoll mark
From Conservapedia
This is an old revision of this page, as edited by AbortionRules (Talk | contribs) at 05:32, January 25, 2011. It may differ significantly from current revision.
A series of horizontal lines, corresponding to the seasons of the year and fresh or saltwater, painted on the outside of a ship marking the level which must remain above the surface of the water for the vessel’s stability.[1]
Big jobbies!