Gun weight of 27 tons, 13 cwt, 1 qtr 7lbs. Fired a 390 lbs. (131.5 kg) solid shot at 2,250 fps (686 mps) or a 320 lbs. (145 kg) solid shot at 2,392 fps (729 mps). Propellant was 58.5 lbs. (26.5 kg) Cordite 0.4. Overall gun length of 385 in (978 cm) and a bore length of 371.6 in (944 cm) or 40.4 calibers.

Four 9.2"/24 (23.4 cm) guns built for Fort Phillip in Australia.

Built for the Australian Adelaide but never mounted. Very similar to the 9.2"/31.5 (23.4 cm) Mark IV but with a larger chamber. Sometimes called the Mark IVE.

Gun weight 24 tons 1 qtr 2 lbs. Overall length 340.4 in (865 cm), bore length 324.65 in (825 cm).

Gun weight 24 tons 14 cwt 2qtr 12 lbs. Fired a 390 lbs. (131.5 kg) solid shot at 2,007 fps (612 mps). Propellant was 75 lbs. (34 kg) Cordite. Overall length 322 in (818 cm), bore length not given.

Royal Navy 9.2"/31.5 (23.4 cm) Mark IV gun.

The Pattern G was three coastal defense guns mounted at Sydney, Australia. Almost identical to the 9.2"/31.5 (23.4 cm) Mark VIC. The Pattern G/G1 is described as the BL Mark VI in the EOC gun catalog.

Four wire-wound Pattern H guns built for the Greek Armored Cruiser Georgios Averof (aka Averov or Averoff). Weight with BM was 26.73 tons (27.16 mt). Fired a 380 lbs. (172.4 kg) shell and with a propellant charge of 117 lbs. (53 kg) SC 205 or SC 150 muzzle velocity was 2,770 fps (844 mps) during the 1940s.

EOC higher-pressure design equivalent to the 9.2"/50 (23.4 cm) Mark XI. A single gun was built for evaluation purposes, but the gun was later relined as a standard Mark XI gun.