Two vessels sustained damage after being hit with missiles and a sea drone off Yemen's Red Sea port of Hodeidah early on Tuesday, maritime security agencies and sources monitoring the area said.
Both vessels reported that their crews were safe.
One of the vessels, the Panama-flagged tanker M/T Cordelia Moon, reported being hit by an Uncrewed Surface Vessel (USV) 64 nautical miles northwest of Hodeidah, the United Kingdom Maritime Trade Operations (UKMTO) agency said.
The Houthis later claimed the attack on the Cordelia Moon, saying that it was struck with eight ballistic and winged missiles, a drone and an uncrewed surface boat.
They also said they had targeted a third ship, Marathopolis, in the Indian Ocean with a drone and with a winged missile.