Fairey Gannet - version overview:
Gannet AS Mk.1 - basic anti-submarine version
Gannet T Mk.2 - basic training version
Gannet AEW Mk.3 - early warning version
Gannet AS Mk.4 - upgraded anti-submarine version
Gannet COD Mk.4 - AS.4 modified for transport
Gannet T Mk.5 - training AS.4
Gannet AS Mk.6 - AS.4 with new electronics and radars
Gannet ECM Mk.6 - electronic warfare version
Source:
http://en.wikipedia.org/wiki/Fairey_Gannet
www.britishaircraft.co.uk/aircraftpage.php?ID=41
Gannet AS Mk.1 - basic anti-submarine version
Gannet T Mk.2 - basic training version
Gannet AEW Mk.3 - early warning version
Gannet AS Mk.4 - upgraded anti-submarine version
Gannet COD Mk.4 - AS.4 modified for transport
Gannet T Mk.5 - training AS.4
Gannet AS Mk.6 - AS.4 with new electronics and radars
Gannet ECM Mk.6 - electronic warfare version
Source:
http://en.wikipedia.org/wiki/Fairey_Gannet
www.britishaircraft.co.uk/aircraftpage.php?ID=41