A Dutch barge is a traditional flat-bottomed shoal-draught barge, originally used to carry cargo in the shallow Zuiderzee and the waterways of Netherlands. There are many types of Dutch barge, with characteristics determined by regional conditions and traditions.

A leeboard is a form of pivoting keel used by a sailboat largely and very often in lieu of a fixed keel. Typically mounted in pairs on each side of a hull, leeboards function much like a centreboard, allowing shallow-draft craft to ply waters fixed keel boats cannot. Only the leeward side leeboard is used at any time, as it submerges when the boat heels under the force of the wind.