Amphibious Combat Vehicle
From Conflict of Nations Wiki
Amphibious Combat Vehicles, such as the ACV 1.1 pictured below, are tracked or wheeled vehicles capable of transitioning from water to ground operations without tactical pause.They have countermeasures designed to contend with a range of direct and indirect fire, as well as landmine threats. Particularly well suited for inclusion in a naval capacity, these machines can embark or disembark without the need for harbors; conveniently enough, they can also be strategically airlifted. They have some NBC Protection.
Features
Fast armored unit with low attack values and high vision.
Can embark/disembark with minimal time loss at any coastal province.
Slower than the Armored Recon Vehicle, but more versatile.
Does require a Naval Base as well as a Army Base in order to build.