Columbia launches joint venture to retrofit laid-up OSVs for wind farms 21 July 2021 CSM Energy working with engineer Hydrus to tap into potential of some unwanted oil and gas shipsAuthor: Capt. Johnhttps://www.tradewindsnews.com/offshore/columbia-launches-joint-venture-to-retrofit-laid-up-osvs-for-wind-farms/2-1-1042597