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''Lapstrake''

'''Steffy''': A vessel constructed so that its outer [[plank | planking]] overlaps, and is fastened to, the plank immediately below it. Where planks overlap the ones above them (there have been no European vessel finds to support this alleged method), the procedure is known as ''reverse clinker.'' The surface of a plank overlapped by a neighbour is called a ''land'', and this double thickness is normally held together with closely spaced rivets or nails clenched over metal washers called [[roves]]. Northern European specialists limit the term 'clinker-built' to vessels whose planks are [[rivet | riveted]] together; hulls whose overlapping planks are fastened with [[clench | clenched]] nails, as in most cog construction, are called ''clenched lap'' or ''lapstrake'' hulls.