A koff is a historical type of sailing vessel that was used for coastal shipping off Belgium, the

Netherlands ) , anthem = ( en, "William of Nassau") , image_map = , map_caption = , subdivision_type = Sovereign state , subdivision_name = Kingdom of the Netherlands , established_title = Before independence , established_date = Spanish Netherl ...

, and

Germany Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated betwe ...

in the 18th and 19th centuries. A typical koff had one and a half masts with a

gaff rig Gaff rig is a sailing rig (configuration of sails, mast and stays) in which the sail is four-cornered, fore-and-aft rigged, controlled at its peak and, usually, its entire head by a spar (pole) called the ''gaff''. Because of the size and shap ...

ged main sail and spanker and one or two square sails in the main top. The hull was plump with a flat bottom and a heavily rounded, raised bow and stern. Smaller koffs could be equipped with

leeboard 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 f ...

s. Due to the shallow draught, koffs were especially suited for inshore shipping in shallow waters. The koff had been developed in the late 17th century in the Netherlands. Smaller than the

fluyt A fluyt (archaic Dutch: ''fluijt'' "flute"; ) is a Dutch type of sailing vessel originally designed by the shipwrights of Hoorn as a dedicated cargo vessel. Originating in the Dutch Republic in the 16th century, the vessel was designed to faci ...

, its rounded bow and stern provided however for more storage on board. This made it a popular type that saw increasing service. Koffs were often counted among the

galiot A galiot, galliot or galiote, was a small galley boat propelled by sail or oars. There are three different types of naval galiots that sailed on different seas. A ''galiote'' was a type of French flat-bottom river boat or barge and also a flat- ...

s by contemporary sources because the differences are very subtle: the galiot was considered more slender and therefore more elegant. On the koff, a deckhouse could be installed between the two masts which would provide shelter for up to twelve crew men. The typical dimensions have been reported as "80 feet long, 21 feet wide and 11 feet deep". Later versions could have a schooner or

galeas A galeas is a type of small trade vessel that was common in the Baltic Sea and North Sea from the 17th to the early 20th centuries. The characteristics of the ships depend somewhat from where the ship originated. Swedish variants had two masts and ...

rig.

References

;Notes ;General references * Merchant sailing ship types {{ship-type-stub