Lief Marine Consultant & Trading is a Shanghai-based marine inspection and consultancy firm supporting commercial vessels calling at terminals across the lower Yangtze River and the East China Sea coast. The team concentrates on a focused set of hull inspection scopes that combine ultrasonic thickness measurement, hatch cover testing, watertight integrity verification and underwater survey work on commercial tonnage. Trained technicians perform hull ultrasonic thickness gauging campaigns to deliver steel-renewal data and inform repair specifications during intermediate and special surveys on bulk carriers, container ships, tankers and general cargo vessels. Ultrasonic hatch cover testing on weather deck closures and watertight integrity testing on cargo holds, bulkheads and other compartments protect cargo condition, stability and survey acceptance through verified leak-tightness. Diver-technicians carry out in-water surveys of hull plating, sea chests, propellers, rudders, anodes and other below-waterline items, with video and report documentation prepared in formats accepted by attending surveyors during in-water surveys executed as alternatives to drydocking under classification society procedures. Lief Marine holds service supplier recognition under ABS, BV, ClassNK, DNV and Lloyd's Register for relevant categories, supporting acceptance of reports during periodical, intermediate and special surveys carried out under SOLAS and class rules. The Shanghai base enables convenient attendance on commercial vessels calling at the Yangtze River industrial belt and East China Sea ports, with technicians dispatched to vessels at berth or anchor on tight commercial schedules. Customers include shipowners, ship managers, P&I correspondents and repair yards that need documented evidence of hull condition on commercial tonnage trading through eastern Chinese ports.