Separately, the United Kingdom Maritime Trade Operations (UKMTO) said it had been informed of two explosions near a vessel 27 miles south of Mokha.
There was no damage reported, all crew were safe and the vessel was proceeding to its next port of call, the UKMTO said in a statement, Reuters reported.
It was unclear whether the incidents reported by Ambrey and UKMTO were the same.
MP/PR