Liberia-flagged oil tanker Chios Lion was assessing damage and investigating a potential oil spill after Yemen's Houthis attacked it in the Red Sea, the Red Sea and Gulf of Aden Joint Maritime Information Center said. An unmanned watercraft inflicted minor damage to Chios Lion's port side as part of a swarm of attacks by the Houthis on the vessel and another ship sailing around 100 nautical miles northwest of Yemen’s port city of Hodeidah.