War risk insurers widen high-risk zone for Red Sea(Reuters) — Attacks on ships by Yemen’s Houthis have prompted London’s marine insurance market to widen its “high risk” zone in the Red Sea. The extended high-risk zone takes in more of the Red Sea coast adjacent to Saudi Arabian ports and reaches close to the Saudi port of Jizan, The JWC said in a July 29 advisory. The JWC said it had “adjusted the Red Sea notification line northwards” after two Saudi-linked vessels were attacked in the first few days following the Houthi announcement. Even ⁠small changes to war insurance add hundreds of thousands of dollars in extra costs for a seven-day voyage. War risk premiums for voyages through the ​southern Red Sea have already jumped to between 1% to 2% of the value of a ship from ​0.3% before the Houthi announcement, sources have said.