that looks stunning Dave, I recall building my Kellogs brand 'sea quest' rig many years ago, later I set it in a seascape adding a 700 scale helicopter on the helideck with a Bear escorted by two Phantoms sitting on thin rods flying overhead
Kellogs produced a number of injection moulded kits during the 70's, ones I recall were SRN.4 hovercraft, 1/144 Shearwater Hydrofoil, DH.88 Comet Racer (way better than the Airfix one at the time !)
cheers, Joe