A ship traveling off the coast of Yemen in the Gulf of Aden has come under attack. The British military's United Kingdom Maritime Trade Operations center said the attack happened early on Tuesday. The captain heard a splash and explosion near the vessel, but no one was hurt. The ship and crew are safe and continuing to their next destination. It's unclear who launched the attack, which occurred about 140 miles off Aden's coast. Yemen's Houthi rebels, who have targeted shipping in the Red Sea, have not claimed responsibility. Tensions remain high in the region amid ongoing conflicts.