For the first, seems some Shanghai, with this Transrapid. The airplane, well, interesting the Wheels behind, and profile for some reason, seems strange.
For the boat, i loved the second picture work, mainly because structurally saying seems all right. But it is not a Viking Boat. Viking Boats were narrower this one. This can be a Portuguese/Spanish Sailing Fishing or some other european country in the shape is showed. Viking Hulls were faster than this one can do.
There are some problems, like the middle rip must go until the tip of bow, because it is fragile this way. It is either interesting the differences of Keel comparing to normal ones. Of course yours bring more stability. I enjoyed much! How long it is, 25m?