The Duke class, also known as Type 23, was originally designed for anti-submarine warfare during the Cold War. It became one of the Royal Navy’s most important general-purpose frigate classes, adapting over time to escort, maritime security, and global deployment tasks. The class shows how a specialist ASW ship can evolve into a flexible fleet workhorse.
Type 23 frigates combine helicopter operations, sensors, weapons, and towed-array capability in ASW-focused ships while retaining general surface-combatant roles. Royal Navy ship pages describe them as fast, versatile, and well-equipped frigates. The page should explain that ASW is an ecosystem of hull quieting, sonar, helicopters, weapons, and crew skill rather than a single sensor.
Duke-class ships remain important because they bridge the Royal Navy from Cold War-era escorts toward newer Type 26 and Type 31 frigates. Their long service life and life-extension work show the pressure on medium navies to keep capable escorts available. For HiWars, Type 23 content should emphasize fleet availability, ASW expertise, and transition planning.
| Name | Country | Status | Service Year | Description |
|---|---|---|---|---|
HMS Norfolk (F230) | 🇬🇧United Kingdom | DECOMMISSIONED | 1990 – 2005 | Lead Type 23 Duke-class frigate |
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