Skink Grizzly Tank (Self propelled anti-aircraft gun)

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The Skink Anti-Aircraft Grizzly Tank, was a Canadian self-propelled anti-aircraft gun, developed in 1943–44, for the First Canadian Army. The chassis was based on a Grizzly I cruiser tank (a Canadian manufactured M4A1 Sherman tank). The cast turret held four 20 mm cannon. Initially, these were 20 mm Hispano-Suiza cannons, which were later replaced by 20 mm Polsten (a simplified version of the Oerlikon cannon).

A prototype was sent to Europe where, from 6 Feb to 11 March 1945, it was evaluated by all but one of the Canadian armored regiments. Although they found it useful in an anti-personnel role, it did not engage any Luftwaffe aircraft.
With a diminishing of its role with the destruction of the Luftwaffe in north-West Europe, the project was cancelled.