While with China Shipbuilding, Ku worked both onsite and on subcontracted projects that included Taipower's No. 3 Nuclear Power Plant and China Petroleum's main Kaohsiung facility. Working in the blazing sun and inside ships, Ku acquired a profound knowledge of welding techniques.
在中船服務期間，古錦松實際參與現場工作及外包工程，如台電核能三廠、中油高雄總廠等焊接工程，多年在烈日下的工作經驗，及船艙內的實作，使他扎下深厚的焊接技術基礎。