United Kingdom Maritime Trade Operations (UKMTO) said on Tuesday that the Greek-owned coal carrier MV Tutor, struck by Houthi missiles and an unmanned surface vehicle (USV) on July 12, has sunk in the Red Sea. The Tutor became the second ship sunk by the Iran-backed Yemeni terrorists since they began their campaign of wanton attacks on commercial shipping in November. It also appears to have been the first ship to be severely damaged by a Houthi USV attack. The weapon was evidently a remote-controlled small boat packed with explosives.