Dalian Huarui Diving Engineering Service Co., Ltd. is a Chinese commercial diving and underwater inspection company headquartered in Xianlinyuan of Dalian City, Liaoning Province. The team supports merchant shipowners, ship managers, port operators, and offshore service companies along the Liaoning coast and across the wider Bohai Sea and Yellow Sea port cluster, providing on-call diving attendance, underwater video survey, and short-notice repair work for vessels under intermediate or special class survey.
Specialist services delivered by Dalian Huarui cover underwater inspection of hulls, sea chests, rudders, propellers, anchor chains, and submerged appendages, propeller polishing and minor mechanical correction, underwater hull cleaning oversight, underwater welding and cutting for emergency repair work, structural maintenance on submerged components, and supporting documentation prepared for review by attending classification society surveyors. The diving department combines mixed-gas and surface-supplied diving capability with photographic and video equipment to support in-water survey campaigns that allow shipowners to verify hull condition between scheduled drydock intervals.
Operations are recognised by ClassNK for underwater inspection work, and field deliverables are produced in formats accepted by the China Classification Society, the American Bureau of Shipping, Bureau Veritas, DNV, the Korean Register of Shipping, Lloyd's Register, and RINA where shipowners specify multi-class survey requirements. The Dalian location gives the team convenient road and sea access to Dalian Port, Yingkou, Dandong, and other northern Chinese coastal anchorages, supporting both routine commercial work and short-notice emergency response when vessels are detained for hull-related rectification.