A fire broke out in an Iranian navy vessel near the mouth of the Gulf, but the entire crew was able to safely disembark, the semi-official news agency Fars quoted a navy statement as saying on Wednesday.
Firefighting operations continued on board the ship which was near the Iranian port of Jask situated on the Gulf of Oman, the statement said, adding that the vessel was on a training mission.
The statement did not give the cause of the fire.
It was the latest in a reported series of attacks on Israeli- and Iranian-owned cargo ships since late February in which the two arch-enemies accused each other of responsibility.
The incident took place during training in the Gulf of Oman, a sensitive waterway that connects to the Strait of Hormuz through which about a fifth of the world's oil passes. Iran regularly conducts exercises in the area.