Sea Wing

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Sea-Wing is an anti-air sub mainly used for air defense for Imperial fleets, while the Sky-Wing is a close air support plane that is useful for taking out groups of infantry. However, it lacks the firepower to pierce the heavy armor of tanks and ships. The Wings are not without their flaws, since they are vulnerable to whatever they cannot target. When airborne, anything that isn't infantry can and will destroy it quickly, particularly air superiority fighters. While underwater, it cannot safely operate without escort from some Naginata cruisers, as it only provides air defense, and while being a submarine does have its perks, it falls very easily to enemy vessels, many of which can target them directly.

Yari Mini-sub

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Yari Mini-Sub is the Imperial made, rather frail, being best used for recon and harassment against poorly protected enemy facilities, since it cannot target air or ground, and must surface to fire. In numbers they can beat back stronger vessels like the Assault destroyer, Akula sub and Naginata cruiser, or achieve great value by using its Last Voyage ability, though said assault destroyer's main gun, advanced base defenses and torpedoes still pose a threat, as are Dolphins.