[Jimbuna]

I'd sail around the tip of Scotland because the much shorter route through the English Channel is heavily patrolled and mined.

As you head soth from the tip of Scotland you are in a rich hunting ground/area (Rockall Banks/North Western Approaches).

Travelling south a hundred mile or so off the west coast of Eire will see you soon coming across another heavy traffic convoy route (South Western Approaches) and as you head toward your patrol destination travelling down the west coast of Portugal you've a good chance of coming across northbound convoys from the Med and South Africa.

Chances are you'll have little or no ordnance left when you reach your designated patrol grid.