The crew was not injured and the vessel was able to continue its journey, the British navy's United Kingdom Marine Trade Operations and security firm Ambrey said.

"A merchant vessel has reported that they have been struck by a missile and the vessel has sustained some damage," said UKMTO.

There was no immediate claim of responsibility from the Huthis, who have launched dozens of attacks on shipping in the commercially vital seaway over the past four months.

The rebels say they are acting as part of an "axis of resistance" of Iran allies and proxies, in protest at Israel's war against Hamas in the Gaza Strip.

The Huthi attacks, including a deadly assault on a bulk carrier last week and the sinking of a ship carrying thousands of tonnes of fertiliser, have triggered reprisal strikes by US and British forces.