Please share the save file;
It's possible that the brown faction doesn't have any heroes yet, as the status bar is empty, and it's building a castle, which is why the turn looks like this, but we'll try to fix the lag.
Regarding summoning the boat... we'll see... although he's not a logistics expert... we'll think about it. There's one consideration here. The spells originate from a racial ability, not from the race itself, which is strange, so summoning a ship for an Orc who doesn't have his own racial ability will have to be taught not in the Orc castle. Although, anything is possible...
The brown faction already has a hero - "elusive" - with his ability to not lag when going ashore...
And regarding the possibility of reading a spell in a regular castle - I'll check...