Yemen's Houthi group said on Sunday it had fired ballistic missiles at a British destroyer, the HMS Diamond, in the Red Sea.
The Houthis said in a statement the strike was "accurate" but did not say whether it had caused any damage.
They said they had also attacked two commercial vessels, which they identified as the Norderney and Tavvishi. The statement said the Tavvishi - which was in the Arabian Sea - and the Norderney had both been hit and that a fire broke out on the Norderney.