Maritime security company Dryad Global said it suspected, though could not confirm, that the vessel involved in the alleged attack was the container ship MT LORI.
It said the ship, while en route to the Indian port Mundra from Dar Es Salaam, came to a stop and drifted for about three hours before continuing its journey at about its original speed.
It comes about a month after Israeli Prime Minister Benjamin Netanyahu blamed Iran for an explosion aboard an Israeli-owned ship in the Gulf of Oman.
The vehicle-carrier MV Helios Ray was hit between the night of February 25 and morning of February 26 by a blast above the water line that a US official said ripped holes in both sides of its hull. An Israeli official said limpet mines were used.
Iran denied involvement at the time.
“We strongly reject this accusation,” said Saeed Khatibzadeh, spokesperson for the foreign ministry in Tehran.