How many carriers cover both Canadian coasts reliably?

How many carriers would be needed to keep one ready for either Canadian coast?

About six would be the practical minimum for reliable two-coast readiness.

Dependable carrier coverage of both Canadian coasts is estimated to require about six ships. The number reflects the difference between a ship existing in the fleet and being ready to respond while others train, maintain, or refit. The scenario's two Canadian carriers are therefore an alliance contribution rather than a self-sufficient two-ocean carrier force. Readiness arithmetic places a hard constraint on geographically ambitious fleet plans.