Shore Power Problem

I have a 1969 pacemaker with single 30 amp shore power. I have added a microwave and a few other high draw items and would like to add a second 30 amp service. Can anyone tell me what I will need to do to add the second service. The generator is a 7.5 kva so it can supply plenty of power for both. I just need to know what I need to conect it all. The original breaker box on the boat is just a residential box. Any help would be greatly appreciated.