Appreciate the review and now thinking of picking this up.
I have one problem with subsims in general however:
The sound of the ocean waves lapping against the hull and the drone of the diesels tends to put me to sleep!!!

I wake up with keyboard inprints in my forehead
I still get my hours in....but tend to play early mornings on the weekends with a large mug o' joe at hand as a result
Very cool that it depicts Q ships and minelaying operations