Board Thread:Fleet's Prepared-ness/@comment-26881373-20180901124628/@comment-34778975-20180903051023

That's not just an uphill battle, by design it will prove to be impossible after a varying number of events and unique drops have happened. Keep enough and hard decisions will come quickly and often. If the game's been entertaining enough to play long enough to fill up 90 of your slots with ships you want to keep I think it's worth throwing a bit of coin their way to help keep the servers on and new content coming.

As you yourself stated, you're stuck in your current stage of progression due to restricted harbor size. Expanding that fleet will be key to playing at the next level as it will allow you the fleet variety required by historical routing and shiplocking in exchange for greater map final rewards.