Another enjoyable pasttime is to fulfill the mission requirements, refit at a suitable base and then go freelancing, refitting as required till the crew threatens mutiny to return to home port....
When I was assigned to Brisbane, Tulagi was a refit port and it's a short trip up the Slot to the Bismarck Sea and the target rich environment of shipping inbound to Rabaul.
The screen shots represent about three weeks of game time and 137,000 tons of shipping sunk. Barring a crew takeover, plan to return to home port when the total tonnage reaches 200,000....