The captain surnamed Yu (尤) was detained for questioning after customs officials discovered a large cache of heroin during a shipboard inspection of the Yang Ming Horizon operated by Yang Ming Marine, Taiwan’s second-largest shipping line, when it arrived in Kaohsiung on Thursday, sources said. The Yang Ming Horizon departed from Hai Phong Port, Vietnam, early on Sunday last week. Its itinerary listed a stop in Hong Kong before sailing to Kaohsiung, sources said. The Yang Ming Horizon is pictured at Kaohsiung Harbor on Thurday. Cases implicating a globallyrecognized shipping company such as Yang Ming Marine are extremely rare, they said, adding that authorities will continue to investigate whether internal management lapses within the shipping company were involved and to determine whether other personnel or a larger transnational drug trafficking network might be connected to the case.