This construction method makes boat kits accurate and easy-to-build
The Tab-n'-Lock system is used on several of our skiffs that do not require a strongback/building jig for construction making the boat very quick and easy to build. Tab-n'-lock uniquely uses mortise-tenon-type joinery between the bulkheads or frames of the skiff interior and the side panels of the boat. The tabs on the bulkheads and frames engage slots that are pre-cut into the side panels. This system is only possible with the advanced computer modeling and careful CNC cutting that are the hallmark of Chase Small Craft kits. To hold the bulkheads and frames tight to the hull sides, typical shims from the hardware store or shop-cut wedges are used. They can be removed and replaced after the dry fit of the hull. After the gluing is complete, the tabs are cut flush with the sides of the hull, sealed, and painted over. They are not visible from the inside of the hull, which can be varnished.
Tab-n'-lock is also used as a way to join bulkheads and strongback parts on larger boats requiring a building jig. This "3D puzzle" allows the interior structure to be locked together in the building jig, a major convenience, and creates a rigid interlocking structure over which the hull is planked.