This is the twelfth game in the Pocket Battle Games series from LPS, Inc.
From Wikipedia:
The Channel Dash, (codenamed Operation Cerberus by the Germans), was a major naval engagement during World War II in which a German Kriegsmarine squadron consisting of both Scharnhorst class battleships, and heavy cruiser Prinz Eugen along with escorts, ran a British blockade and successfully sailed from Brest in Brittany to their home bases in Germany via the English Channel.
As the German player you want to push your capital ships through the Channel, attracting as little attention to them as possible. Where needed the Luftwaffe will support you, tackling any possible opposition by the RAF or Royal Navy. And hopefully you will not hit any mines...
As the British player you hope to raise the alarm as soon as possible. Depending on the level of alert you can deploy the RAF and Royal Navy and sink the Kriegsmarine's hope of dashing through unscathed.