What country is a child born on the high seas?

each nationality is independent; What nationality a person has depends on the laws of each country to decide whether he has the nationality of that country. Generally speaking, the nationality at birth mainly depends on the country of birth and the country of parents' nationality. Being born on the high seas is just a country without a birthplace. And the country of parents' nationality. As far as I know, all countries in the world have rules of bloodline; It is in some cases that children born to their nationals in other countries have their nationality. Although some countries have conditions for this bloodline, such as how long parents must stay in that country, etc., otherwise the nationality will not be passed on to their children; But this is a very small number of cases. In 99% of cases, children (wherever born) will get one or more nationalities from their parents at birth.

In rare cases, it may be impossible for parents to obtain nationality. It is stipulated in some countries that if a child is born on a ship registered in their country, he will have their nationality unless he has any nationality at birth. If a child cannot obtain the nationality of his parents, but is born on a ship registered in such a country, he will have the nationality of that country. Not many countries have such a provision, but it includes all countries that have acceded to the 1961 Convention on the Reduction of Statelessness. Otherwise, the child may be born stateless.