Family tree
To the best of my knowledge the North Shore lineage extends into the Impex boats via Pyranha’s Mystique (Later renamed Pilot), Impex at the time being an importer of both North Shore and Pyranha before launching there own Formula range of kayaks, later Impex. My understanding being that Impex wanted Pyranha to launch a plastic sea kayak and commissioned North Shore to provide the design, they then decided to launh there own range of glass kayaks and used the same model as a basis for that.
The Mega bit I don’t fully understand but I do believe this was a version of a North Shore design, whether official or unofficial I don’t know