Outside LaSpezia/Italy.
I dont even know whos permission to ask, the credits list is very long. And where exactly these buoys are used?
They float a bit low in the water and the texture need an update, but they are oke and every light works.. tested red, green and white.
Im not 100% sure about this as I tested these only for 20minutes/5 hours ingame.. but seems like they also block the patrol ships. From 5 patrol ships in port, only one was active when I arrived in the test area.. the rest... stuck. Similar to the problem with the mines. And this is with stock game, no mods ..