You can get the same patrol grids by setting the time in port to too little
The way it works - if I understand right - is the grids are changed on a monthly basis in the flotilla cfg
If you leave on the 1st of the month and spend only a few days on patrol then only a few in port when you set sail next you are still in the same grid allocation month therefore get the same grid
IIRC was one of the reasons date between patrols was set to 28 so you would move on to the next grid allocation month
As the invasion was the early hours of the 9th April most of the freighters carrying supplies left way earlier
Some were even in Norwegian ports when it began
Ready to sail
Have come across them myself before
