Findings:
- Royal Navy Frigates
- Boxer Class Frigate
- Cornwall Class Frigate
- Duke Class Frigate
- Royal Navy Marines
- Sandown Class Minesweeper
- Royal Navy Patrol Vessels
- Castle Class Patrol Vessel
- Island Class Patrol Vessel
- Hunt Class Patrol Vessel
- Royal Navy Landing Platform Docks
- Royal Navy Hydrographic Vessels
- Royal Navy Aircraft
- Royal Navy Submarines
- Manchester Class Destroyer
- Royal Navy Bases
- R^n
- Einar Örn Benediktsson
- Rn notation
- kitty rn (user)
- Hunt Class Minesweeper
- Royal Navy Minesweepers
- Frigate
- Sheffield Class Destroyer
- Royal Navy Carriers
- Royal Navy Ships
- Royal Navy Fleet
- RN
- Six Frigates
- Krivak class frigate
- Neustrashimy class frigate
- Differentiating between frigates, destroyers and cruisers
- There is no frigate like a book
- Halifax Class Frigate
- frigate bird
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