HMS Monmouth (F235)

HMS Monmouth – known as the 'The Black Duke' – is a Type 23 frigate with more battle honours than any other serving warship in the Royal Navy.

Facts & figures

Facts & figures

4,900 tonnes

Total displacement

133 metres

Total length

28+ knots

Top speed

Our Operations

Current operation

Maintenance and Sea Trials


Just like a regular service for your car, all ships go through maintenance to ensure best performance.

Our base

Our base

HMNB Devonport

Plymouth PL2 2BG
Telephone: ‎+44 345 748 4950

Get Directions

Commanding Officer

Lieutenant Commander S Reah

HMS Monmouth's role

Known throughout the Royal Navy and beyond as ‘The Black Duke’, HMS Monmouth is a Type 23 ‘Duke-class’ frigate. Originally designed for anti-submarine warfare, the Type 23 frigates have been used in a number of other roles, from warfighting to peacekeeping missions.

The current Monmouth is the seventh ship to bear the name. She is the only ship in the Royal Navy to have her name painted in black, rather than red; she also flies a plain black flag in addition to the British ensign.

Unit history

Royal Navy careers

Never miss an update

Want all the latest news from HMS Monmouth? Add this page to your favourites. 


Follow HMS Monmouth on Twitter

We got back alongside after productive training at @FOST sorry for the silly faces of our YOs at the end.