Zhoushan Haishan Marine Service Co., Ltd operates from Zhoushan, an island-based Zhejiang Province city that forms the eastern half of the combined Ningbo-Zhoushan port complex, the world's busiest port by cargo throughput, with major crude, bulk, container and ship-repair facilities spread across the Cezi, Liuheng, Daxie and surrounding islands of the archipelago. The firm provides on-board technical attendance covering a wide combined scope of fire-safety, lifesaving, pressure vessel, in-water survey, NDT, thickness-gauging, tightness-testing and radio-survey work to commercial vessels calling Zhoushan-area berths and surrounding anchorages used for crew change, bunkering and routine maintenance. Fire-safety and lifesaving services include portable extinguisher recharge, fixed CO2, foam and water-spray system overhaul, fire main and hydrant pressure testing, EEBD and SCBA breathing apparatus maintenance, lifeboat and rescue boat annual servicing, davit and launching system load testing, liferaft annual inflation and pressure testing and immersion-suit renewal. Hull and structure work covers ultrasonic hatch-cover testing on weather-deck closures of bulk carriers, watertight integrity checks on bulkheads and door arrangements, hull ultrasonic thickness gauging against original scantlings and class wastage limits, NDT examination of welds and structural members and in-water survey by qualified diver-technicians. Radio-survey scope covers GMDSS annual testing, GMDSS equipment maintenance and AIS annual inspection. Haishan holds service supplier recognition by ABS, Bureau Veritas, the China Classification Society, DNV, the Korean Register, the Indian Register of Shipping and Lloyd's Register, allowing reports to support periodical, intermediate and special surveys on commercial tonnage. Customers include shipowners, ship managers, technical superintendents and port agents arranging routine maintenance attendance during commercial port calls in the Ningbo-Zhoushan area and at the surrounding archipelago anchorages used by ocean-going vessels.
