The discussion challenges the idea that Type 26 can simply receive major additional air-defence equipment without trade-offs. More capable sensors and missiles require power generation, topweight, space, altered machinery, and either the loss of existing systems or a larger hull. Adding the equivalent capabilities of a Type 23 to a Type 45-sized combatant could push the result toward 12,000 to 14,000 tons. A multi-role escort may be a legitimate requirement, though it would amount to a new design instead of a minor Type 26 modification.
Chapter · 41:42-44:54
When changing Type 26 means designing a new ship
Turning an anti-submarine frigate into a much more capable air-defence combatant brings radar, power, weapon, size, and cost changes that amount to a new design.