North Ship & Ocean Engineering Co., Ltd. is a Qingdao-based marine technical services firm focused on hull inspection, non-destructive examination and watertight integrity testing for the commercial shipping industry. Operating from Shandong Province on the Bohai Rim, the company supports tonnage calling at Qingdao, Yantai, Weihai, Rizhao and Dalian, dispatching qualified surveyors and technicians to vessels alongside in terminals, at anchorage and to ship-repair yards in the region. Core service lines centre on ultrasonic hull thickness measurement carried out under recognised quality procedures for class intermediate surveys, special periodical surveys and Condition Assessment Programmes, supported by conventional NDT methods including magnetic particle inspection, dye penetrant testing and ultrasonic flaw detection on welded joints and primary structure. The team additionally performs ultrasonic hatch cover tightness testing in accordance with IACS UR Z17, watertight integrity testing of doors, hatches and bulkhead penetrations, and in-water surveys with diver support for underwater hull and propeller examinations on suitably classed vessels. North Ship is recognized by an extensive list of classification societies, including ABS, Korean Register, Bureau Veritas, CCS, DNV, Indian Register of Shipping, Lloyd's Register and RINA, which allows survey reports to be submitted directly for statutory and class purposes across most flag administrations. The company operates a quality management system for inspection engineering and maintains a complement of calibrated ultrasonic gauges and flaw detectors, allowing planned attendance during cargo operations to minimise off-hire for owners and managers.