I believe this would be a Fairey Gannet AS6? Am I even close?

DingDingDingDingDing ....we have a winna! Well done Randy.

*tosses you the bag'o C-indices*
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Fairey Gannet AEW 3 / 1960-1978

AEW = Airborne Early Warning
Carrier Launched Anti-Submarine defence system replaced by helicopters.

What's the prop for though boys, is it like a turbo prop ??

History: Britain’s near-catastrophic experiences with German U-boats during World War Two led to increased awareness and respect for anti-submarine warfare (ASW). In 1945 a challenging naval specification for a carrier-based ASW/strike aircraft was issued. Ten years of design and development led to the adoption of the Fairey Gannet, a highly successful three-man aircraft built around a most unusual engine.

The Armstrong-Siddeley Double Mamba coupled turboprop engine boasted two independent power sections driving separate propellers. After both sections were used in the crucial take-off phase, one could be shut down to extend range and patrol time. Additionally, the engine could refuel from its aircraft carriers' own diesel fuel bunker, eliminating special aviation gas tanks on board. Fully armed with torpedoes, depth charges or rockets the plane had a maximum speed of 311 mph and a 662 nautical mile range.

Fully ten years after the initial specification, the Fairey Gannet reached the active fleet, in service with HMS Illustrious, HMS Ark Royal and HMS Eagle. Eventually, 255 of the up-rated version (Gannet AS Mk4) satisfied the Fleet Air Arms’ need to replace aging Fireflies and Avengers.

In 1958, the first prototype of the Gannet AEW Mk3 reached the fleet, fulfilling the need for an airborne early warning aircraft. The Mk3 incorporated major re-designs including a new fuselage and longer undercarriage to allow for a radome. The problems of fixed-wing aircraft on small decks led to the Gannet’s replacement by Wessex helicopters in the 1970’s but a number have survived in museums, including two which are airworthy in the USA. [History by Jeff VanDerford]

ENGINE

After considering and discounting the Rolls-Royce Merlin (actually, twin Merlins) due to size, the Fairey decided to install an engine plant based on the Armstrong-Siddeley Mamba. A Double Mamba (also commonly called the "Twin Mamba") was selected, driving two counter-rotating propellors through a common gearbox . The ASMD.1 engines (2,950hp) were used in the AS.1, ASMD.3 engines (3,145hp) inn the AS.4, and ASMD.4 (3,875hp) in the AEW.3 variant. The Double Mamba engine could be cruised with one of the engines stopped, to conserve fuel and extend endurance. It has been said by pilots that, while this was possible, it was inadvisable at low altitude -- in case the operating engine stopped for some reason. This happened frequently enough to be a 'known fault', and created considerable dis quiet for the crew while that or the other engine was restarted.

Thanks Rob, never too old to learn. LOL