And the sailing and landing match up for me - I accidentally added a day to myself :) made a mistake :)
1 day - boarding the boat (inactivity)
1 day - at full sail, oars, outboard motors, hovercrafts and jet engines to Warlock + landing
1 day - capturing Warlock, Sorcerer and pushing back 2 warlock and 1 sorcerer heroes
1 day - capturing Barb and pushing back 1 warlock, 2 sorcerers, 3 barbs. VICTORY! :)
In total, 1 Castle each was captured (the computer had no towns) and 3 heroes each.
I used 11 heroes during the game (including the starting one).
Even shorter: how many do you have? 13 days? :)