Clinker-built is a method of boat building in which the edges of hull planks overlap each other. Where necessary in larger craft, shorter planks can be joined end to end, creating a longer strake or hull plank.
A Viking longship, displaying the overlapping planks that characterize clinker construction
Clinker hull of the Nydam Boat from Jutland
Clinkered prow of the Viking Oseberg ship
Clinker-built medieval cog from Stralsund
Boat building is the design and construction of boats and their systems. This includes at a minimum a hull, with propulsion, mechanical, navigation, safety and other systems as a craft requires.
The schooner Appledore II under construction
Damaged boat mid-reconstruction; carvel planking partially removed
Caulking irons and oakum
Caulking a wooden boat