Clinker construction

Also Clencher, according to taste. A form of hull construction in which the edges of the planks overlap, and are riveted together with copper boatnails. It makes a structure which is light for its strength, and which needs no caulking. The overlapping edges are called the Lands, and the lands nearly always face downward though there have been a few exceptions. The succession of small, downward-facing steps prevent water flowing up the side of the hull and make for a dry boat. On the other hand there can be a great deal of water noise with a clinker hull.