Naval research question

[clinch]

When you research developments for land and air units you have to upgrade individual units. I cannot see any way of doing it with warships and submarines. Does the research automatically apply to naval units?

[doomtrader]

yes, exactly

[clinch]

Thanks for the swift response.

[clinch]

If I could ask another one. I'm a little confused. the manual says about fleets "Regular Fleet. A Fleet in this mode acts as a single formation; its goal is to seek battle with enemy Regular Fleets and Raider Groups. Whenever it encounters either of these enemy Fleets, a sea battle occurs and all ships will take part in the battle."
From what I have experience, all ships do not take part. The computer seems to use a random selection of ships from a fleet. If you have more than one fleet in a sea zone, it can be a random mix from each fleet.
Can you explain this to me?

[doomtrader]

Probably it would be better if there will be written that all ships might take part in the battle.
There is a check for every single ship, does it join the battle or not. But as you have already observed this check is made for all fleets.