This unit group includes commercial divers.
此单元组包括商业潜水员。
Commercial divers must meet the requirements of CSA Standard Z275.4-02, Competency Standard for Diving Operations.
商业潜水员必须符合CSA标准Z275.4 - 02，潜水作业能力标准的要求。
Commercial divers perform underwater activities related to construction, inspection, search, salvage, repair and photography.
商业潜水员进行水下施工，验收，搜索，打捞，修复和摄影等相关活动。
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