RSS Friedensbringer Tanker

With this Tanker the Friedensbringer mission will be completed. Use it to refill the Friedensbringer Starship in moon polar orbit once. Uses same Vizzy ascend program as starship.
For the Shackleton mission send both ships in parallel. The Starships goes down to the moon after refilling and since it is a big ship with fuelcells it can stay there for several days or even weeks everywhere on the moon. Meanwhile the recovery mission from earth arrives at moon orbit and can dock with the tanker to take over the rest of fuel. Finally the starship starts from moon again and rendevous with the recovery vehicle. This vehicle will then fly back to earth. Starship stays at moon orbit and can be refilled with two new tankers for the next moon mission with a new crew coming from earth. For example. Or build a moon station, that would be even more fun.