Place home city water spawnpoint
From AgeofWiki
You may place a home city water spawnpoint in almost any water body on the map.
Choose the player you want to place a water flag for. Choose a body of water. Try placing a caravel for that player in the chosen area. If the caravel can be placed with no problems, you may put a home city water spawnpoint for that player in that spot. (Delete all caravels before placing the home city spawnpoint.)
Objects>Place home city water spawnpoint. Place it on the same spot as the caravel was or would have fit.
The home city water buoy should appear on that spot.
Some restrictions to placing home city water spawnpoints: You may not place them too close to your enemy's starting Town Center. You may not place them in any water type or depth where ships are normally forbidden; e.g. Bayou shallows or river crossings. You may also not place them on or inside other structures in the water - shipments must have enough room to spawn alongside the water buoy.
