45°38'N-13°47'E
Deity
Never know when something has been reported or not but here is what I am experiencing in build 667.
My ship patrols do not function. That is barbarian ships are allowed to attack sea resouces without first engaging in ships on patrol guarding the asset. Further when the asset is destroyed the Fish Hut and Fish Nets cease functioning as expected, HOWEVER, another city's Fish Hut in process could no longer be built and did not show in the menu of building available. It did not show up as available until the originally destroyed fishing grounds was rebuilt.
Buck
Upload a savegame please. Also Fish hut requires fish; do you have other fish resources beside the one destroyed by barbarians?