Complex sentence: She departed Vietnam 14 March 1970 and was decommissioned in May 1970 and used as a hospital annex for Long Beach Naval Hospital, this proved uneconomical and she was sold for scrap in 1975.
Split into simpler sentences: She departed Vietnam 14 March 1970 and was decommissioned in May 1970 and used as a hospital annex for Long Beach Naval Hospital. This proved uneconomical and she was sold for scrap in 1975.