This is a Single Player Map - find it under the training maps. Your mission is to separate from your boatcrew go along that river with friendly support and airattack, then find that ship that blocks the river and blow it up. There is one "bomb" already attached to it. This has to happen before the boat comes by, get stuck and the crew is killed. There are some locations that are inhabited by BG , but they have no strategic meaning. You can go there and try to get these bunkers- but hey - THIS is not your job! Have fun.