"The Italian and Maltese authorities have brazenly undermined the search and rescue system and used people as pawns to negotiate migration policies".
"After 19 days at sea, our guests finally have a safe haven", Sea-Watch tweeted.
Thanking civil society for its support, Sea Watch commented: "Disembarkation can not be subject to negotiations between states at the expense of people".
"We want to express our gratitude to. all cities, federal states and provinces that declared their ports open and their willingness to welcome people".
Mr Muscat welcomed the show of "solidarity and understanding" shown by the European Union nations, and said the transfer of migrants to the eight other countries would begin as soon as possible.
Italy's populist government split over the fate of those aboard Sea-Watch 3 and another private vessel, Sea-Eye, with Premier Giuseppe Conte saying that Italy was willing to take children and their parents, even as Mr Salvini remained defiant. He said that Germany still aims to reach "a long-term and sustainable mechanism".