Counterspy

Counterspy 123movies: adventure movie from 1958 starring Don Megowan and Brad Johnson, with a viewer rating of 6/10. When a massive Soviet battleship negotiates the treacherous Oslo harbor without a local pilot, American counterespionage agent David Harding suspects that the enemy has developed a secret navigational tool and orders his operatives to find a local frogman to take pictures of the vessel's hull when the ship makes a goodwill tour stop in England.