that could be easily developed taking parts of container city.
its a coastal map like container city ( meaning map will have a sidenext to sea in most parts of the map )
but instead the bot there will be a boat which purpose is on the end to deliver ammo - supplies to destination part (similar in looks like that map whith the nice looking marinas probably near the ark tower)
Resistance: so the concept is to be repairing and maintaining the boat to deliver supply to the fellow resistance camps outside the big tower
Security:build baracades or plant explosives on crusial spots on the boats route.
boat has to be either regular size in case developers just put the supplies on boat and resistance by the coast streets and alley's or a bigger boat with most resistance team on the boat
there could be parts where players could go in or out the boat for capturing objectives etc.