Hydronaut

This unit is strong against all unit types, especially Aquatic units. It has a wide range and can attack further than the other Aquatic units, but it cannot attack or defend against units in close range.

Strategy
Hydronauts has the highest range among all navies. This is what somebody called ‘Sea Artillery’. Take advantage on its long range and try to attack all the battleships and sea monsters as early in your range as possible.