Never (ski-)jump to conclusions. The Conroy Tri Turbo Three was not using the Harrier ski-jump rig at the 1978 Farnborough Airshow. Jack Conroy's company had also converted the CL-44-O Skymonster, and he had worked for Aero Spacelines converting the Stratocruiser-based Guppy series in the 1960s. The coastguard-like "Maritime Patrol And Rescue" markings are bogus and for promotional sales purposes only.