Okay, so, the subs are up on Crunchyroll. And according to them, the Fog used to have aircraft, but they disbanded their air component after the Great Naval Battle; the<em>Seiran </em>there was remade later by I-400, and<em>Zuikaku</em>is using it to go fishing.<br/><br/>The reason why was that the planes didn't have Klein Fields, so they were easily smashed up by human anti-aircraft weaponry.