Three ships and the US Coast Guard are today searching for the chief engineer of a container ship who fell overboard 140 miles southwest of Bermuda.The 30-year-old man was last seen aboard MSC Tuscany at lunch time yesterday in his orange boiler suit; a search of the vessel revealed he was nowhere to be seen at 6pm.Bermuda Maritime Operations Centre last night said a search had been launched in conjunction with the Coast Guard.The BMOC said today a second Coast Guard C-130 aircraft was due to arrive on scene at 8.30am today.MSC Tuscany, Stena Polaris, Akritas & Overseas Ariadmar are searching the area today.The Hong Kong-registered ship was heading from Montreal to the Dominican Republic.