Helps to know that Part 1 registry is possible from the US (and very helfpul to know that Part III registry will not suffice for foreign customs and so not an option).
Part III registry WILL suffice for foreign customs all over the world. It is called Small Ships Registration or SSR and can be applied for on line
, Tens of thousands of boats using it daily.
24 metres loa max and must be owned by an individual.