Unit Suggestion

Marines?

You know what i would like? the ability as transport sips to have a little range from your units on them for a little more defense. This and ranged subs for torpedoes. OR even an underwater missile, having to be made in a province with a naval base and secret lab, where it would be a rocket but have almost unlimited range but could only go in one direction and would to a ton of damage to ships or naval cities, the only problem with that is just the historical accuracy of it.