Unidentified Royal Navy Astute-class nuclear attack submarine (SSN).
Location: Firth of Clyde, Scotland.
Unidentified Royal Navy Astute-class nuclear attack submarine (SSN).
Location: Firth of Clyde, Scotland.
Unidentified Royal Navy Astute-class nuclear attack submarine (SSN).
Location: Firth of Clyde, Scotland.
Unidentified Royal Navy Astute-class nuclear attack submarine (SSN).
Location: Firth of Clyde, Scotland.