OBS_VALUE: Entry visas for Crew members are necessary for nationals of Group 3 and 4 and valid up to 1 month. Circular DG-0022-08-2014 with list of countries and Groups: http://www.migracion.go.cr/extranjeros/visas.html. Only nationals from OECD member States (countries listed under Group 1 and 2) or those who already have a tourist, crew or business visa to the United States, the European Union, Canada or Japan, do not need a visa to enter the country. They can legally remain in the territory for up to 3 months.