H.M.S. G1
1916
(Navis 172)
- Class: G class - 14 submarines of 1913-15
- Displacement: 703 tons surfaced; 837 tons submerged
- Dimensions: 187ft 1in x 22ft 8in x 13ft 4in
- Machinery: 2-shaft 8-cyl diesels, 2 electric motors, 1600hp/840hp = 14/9 kts
- Armament: 1-21in TT (stern), 4-18in TT (2 bow, 2 beam), 1-3in AA
- Complement: 30
- Builder: Chatham
- Laid Down: 1915
- Launched: 14 Aug 1915
- Completed: 1916
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