Following the definitions of operations and maintenance I set out in my letter to the hon. Member on 5 November, the number of months each Royal Navy attack submarine spent on both in each year since 1997 were as follows:
Vessel Op time Maintenance Op time Maintenance Op time Maintenance Splendid 4 7 4 3 5 2 Spartan 6 3 6 4 0 12 Sovereign 0 12 3 6 6 6 Superb 0 12 3 5 6 6 Sceptre 1 11 0 12 0 12 Trafalgar 8 2 4 6 5 7 Turbulent 1 9 4 6 10 1 Tireless 0 12 0 11 6 5 Torbay 6 4 0 12 11 1 Trenchant 5 6 1 8 0 12 Talent 2 6 3 6 3 8 Triumph 8 2 5 4 4 6
Vessel Op time Maintenance Op time Maintenance Op time Maintenance Splendid 3 7 4 8 8 2 Spartan 0 12 0 12 0 11 Sovereign 3 9 0 12 0 11 Superb 3 9 5 5 0 11 Sceptre 0 12 0 11 0 10 Trafalgar 0 9 8 4 2 10 Turbulent 2 10 0 9 11 1 Tireless 2 10 2 8 8 3 Torbay 0 12 0 4 4 4 Trenchant 0 12 0 12 0 12 Talent 0 12 3 6 2 8 Triumph 8 4 7 2 0 8
Vessel Op time Maintenance Op time Maintenance Op time Maintenance Splendid 4 8 1— 1— 1— 1— Spartan 0 4 4 5 7 2 Sovereign 2 6 1 11 2 6 Superb 0 12 0 12 0 11 Sceptre 1 3 9 2 4 8 Trafalgar 0 12 2 3 6 3 Turbulent 6 2 4 8 5 3 Tireless 6 5 5 5 0 12 Torbay 8 3 0 12 3 4 Trenchant 0 8 5 2 6 4 Talent 0 12 0 12 0 12 Triumph 8 1 0 12 0 12
Vessel Op time Maintenance Spartan 1— 1— Sovereign 1— 1— Superb 5 6 Sceptre 4 8 Trafalgar 5 7 Turbulent 7 3 Tireless 0 11 Torbay 7 3 Trenchant 0 11 Talent 0 8 Triumph 0 12 1 Decommissioned
The figures given have been rounded to whole months.
The tables do not include leave, trials and work-up periods.