RIYADH: A blast rocked a Singapore-flagged oil tanker at the Saudi port of Jeddah Monday, the vessel's owner said, with the kingdom saying it was struck by an explosives-laden boat in a "terrorist" assault. All 22 sailors aboard the tanker BW Rhine escaped unhurt after the blast struck just after midnight, Singapore-based shipping company Hafnia said, but it did not exclude the possibility of an oil spill. No group has so far claimed responsibility for what marks the latest in a string of attacks on Saudi energy sector targets.—AFP