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Clinker built (also known as lapstrake)〔(''Clinker Boat History & Building''(Michael Webb) )〕 is a method of boat building where the edges of hull planks overlap, called a "land" or "landing." In craft of any size planks are also joined end to end into a strake. The technique developed in northern Europe and was successfully used by the Norsemen and typical for the Hanseatic cog. A contrasting method, where plank edges are butted smoothly seam to seam, is known as carvel construction.〔(【引用サイトリンク】url=http://www.boat-building.org/learn-skills/index.php/en/wood/clinker-and-carvel-different-types-of-planking/ )〕 Examples of clinker-built boats directly descended from those of Norsemen shipbuilders are the traditional round-bottomed Thames skiffs of the River Thames, and the larger (originally) cargo-carrying Norfolk wherries of England.〔(Boat Building'' (Hobby.net.au Australia) )〕 == Origin == The technique of clinker developed in the Nordic (Germanic) shipbuilding tradition as distinct from the Mediterranean mortise and tenon planking technique which was introduced to the provinces of the north in the wake of Roman expansion. Overlapping seams already appear in the 4th century BC Hjortspring boat. The oldest evidence for a clinker-built vessel, dendrochronologically dated to 190 AD, are boat fragments which were found in recent excavations at the site of the famous Nydam Boat.〔Jorgensen et al. 2003 p299, ''The Spoils of Victory – the north in the shadow of the Roman Empire'', Nationalmuseet〕 The Nydam Boat itself, built ca. 320 AD, is the oldest preserved clinker-built boat.〔(The Nydam Boats )〕 Clinker-built ships were a trademark of Nordic navigation throughout the Middle Ages, particularly of the longships of the Norsemen explorers and the trading cogs of the Hanseatic League. File:Nydamboat.2.jpg|Clinker hull of the Nydam Boat from Jutland File:Exhibition in Viking Ship Museum, Oslo 01.jpg|Clinkered prow of the Viking Oseberg ship File:Kogge stralsund.jpg|Clinker-built medieval cog from Stralsund 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Clinker (boat building)」の詳細全文を読む スポンサード リンク
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