Look, now this is a very specific question and you will be glad to know that the United States does not require you to have any kind of license. However, other countries may, and for this, you must find out the rules in different countries as you navigate.
Again, this holds right for individuals in the USA as well. While ships and aircraft stations may need licensing for using a VHF. So, you see there are rules and regulations that you need to follow everywhere.