Well to start with, I don't see how you expected sending a lone Corsair across the map to work. RiposteR started a Seawolf after scouting the lone Corsair.

Then you sent a barely supported Siren across the map. This is like expecting to win by sending a lone Ogre across the map. It didn't work.

Overall I saw a lot of fighting in the middle and I'm not sure why. You tried to dive the enemy base multiple times rather than attack expansion or retain an army. Sea will feel like cycles of RPS if you keep trading away your army, but I doubt trading away your army is a good way to play.

I think early game raids involve 2 or 3 Corsairs running over Urchins, but I saw none of that. I also saw no Cutter, which would have been very good as otherwise you're near blind on the other side of the map.

I saw Hunter spammed like Glaive, but there isn't any generic do-everything raidar in sea. Hunter is pretty bad against defenses and can't deal with things on the shore. I can see how Hunter spam could end up being optimal, but I'm not convinced it is.

Basically, I need to know whether you know something I don't about sea, or whether you're mistaken about how sea plays. The latter would still be a problem, but it would be one of communicating mechanics rather than changing them.