The International Maritime Organization (IMO) evacuated about 2,500 stranded seafarers before suspending operations in the Strait of Hormuz, the UN agency said on Friday.
IMO Secretary General Arsenio Dominguez said the mission, which began at the start of the week, involved at least 115 ships.
The London-based UN agency temporarily suspended the operation following an attack on Thursday on a vessel in the Gulf of Oman that had transited the Strait of Hormuz.
The agency was now in active discussions with Iran, Oman and the United States to secure renewed assurances before restarting the evacuations.
The IMO announced on Tuesday that it planned to evacuate more than 11,000 seafarers stuck in the Strait of Hormuz.
The strategically vital Strait of Hormuz, a key artery for global trade, had been effectively blocked for weeks after Iran began threatening and attacking civilian vessels, followed by a US blockade of Iranian ports.
At least 14 seafarers have been killed and more than 40 commercial vessels attacked during the conflict, according to the IMO.
