In the 1960's the Royal Australian Navy asked for a small sized, relatively cheap escort vessel to perform a wide range of peacetime and wartime missions, including Anti ship, Anti-Submarine and Anti-Air ones. For these missions the armament was relatively light but well balanced. The project was dropped due to the issues between missions of what the RAN required and what the RN designers proposed and in the end the Australians bought modified Charles F. Adams class Guided Missile Destroyers, the Perth class and a number of fast attack patrol crafts.
Original design included full British weaponry but the Australians wanted American made missiles and guns, thus I've created this later variant.
The design the following characteristics:Dimensions: 101,5 (wl) x 10,4 x 3,5m Displacement: 1.800tons (standard), 2.000tons (full load)Engines: 35.000shp, 2 shafts, CODOG (Combined Diesel Or Gas) Probably MAN diesel & General Electric LM2500-23 gas turbines.Speed: 69km/h (37knots)Range: 9.600-10.500km at 22km/h (5.200-5.700nm at 12knots)Armaments: 1x1 127mm/54 Mark 18 Gun
2x1 20mm/70 Oerlikon AA Guns,
1x8 RIM-7 Sea Sparrow Missiles,
2x3 324mm Torpedo Tubes
1x Bell UH-1 Iroquois helicopter
I've based my drawing on this proposal:i.imgur.com/vCGC3pW.png