Shanghai Oarsman Marine Technology Co., Ltd., founded in 2005 and headquartered in Shanghai, is a Chinese marine radio communication and navigation services firm with site offices in Dalian, Tianjin, Qingdao and Guangzhou supporting commercial vessels calling at major Chinese ports along the eastern seaboard. The company specialises in shipboard radio, navigation, safety and security electronics, providing GMDSS and Radio Survey services, GMDSS shore-based maintenance, AIS annual inspections, Voyage Data Recorder and S-VDR annual performance tests and GMDSS equipment service. Alongside electronics work, technicians carry out life-saving appliance servicing including periodical testing of LSA items, annual servicing of lifeboats and rescue boats and liferaft annual inspections. The team also undertakes hull and structural scopes including ultrasonic hatch cover testing, watertight integrity testing, underwater inspection by diver-technicians and non-destructive testing using ultrasonic, magnetic particle, dye penetrant and visual methods on welds and steel members. Shanghai Oarsman holds service supplier approvals from a broad set of classification societies including LR, DNV, ABS, ClassNK, BV, RINA, CCS, KR, IRClass and other recognised organisations for GMDSS annual inspection and VDR and S-VDR annual performance testing. This combination of recognitions supports acceptance of reports during periodical, intermediate and special surveys under SOLAS Chapter IV and Chapter V requirements. With a network of branches and a global service reach extending into North America through partner depots, the firm provides a coordinated service to shipowners, managers and operators relying on safety-critical communication, navigation, life-saving and inspection work on commercial vessels trading through China and worldwide ocean routes.