Just to add my bit to feedback. I love your game, it is excellent idea and I am excited about the developments!
Time slowing down during engagements should be optional - perhaps button in menu settings which can turn it on/off?
I hope there will be more variants of hulls, so you can for example set up yourself whether you want any secondary guns in casemate and how many...
What about starting battles with either realistic or arcade mode (similar to WarThunder) in order to see torpedoes marked (maybe like WoWs) or make it an option in menu.
Training level and numbers of the crew should have impact on ship's performace. E.g. ship with skeleton crew of demoralised men who have seen most of the ship burnt and their comrades fall cannot be expected to load and fire the guns exactly each x seconds. Later in campaign mode newer ship with untrained crew and/or captain ought to be on par with somewhat older ship with well-trained veteran crew etc.
Damage to sections should also be differentiated for left/right side.
As for camera, please allow view for following shells/torps like in WoWs.
If ship is fitted with radar there should be information from radar available to player so the player knows how many ships there are and where are detected.