You should explain in the Tutorial (to the effect of) that you need to keep the ship at the dock/storage house over time for your Cargo to fill up, but One could just figure this out after some guessing.
I was wondering why my Boat speed slowed down so dramatically which I thought was an error, but realize the boat moves slower naturally for having the weight of the cargo applied.
-There are times where you can still navigate your ship at 100% damage.
-The "James Bondesque" music was fun.
I like your dramatic description for the game and thorough accreditation.