Thanks, THEBREBSTER,
I will remember this for next time. It seems that SH5 compared to SH3 is much more unforgiving when it comes to sub damages. 1 enemy shell hit and you can have most systems on your sub destroyed, quite realistic, but the game ends in a flash
The Crew Management in SH3 is much better, but that's almost the only thing that beats SH5 TWoS in my opinion.