Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. HMCS Ottawa (DDH 229) was a St. Laurent-class destroyer that served in the Royal Canadian Navy and later the Canadian Forces from 1956-1992. She was commissioned into the RCN on 10 November 1956 and initially carried the pennant number DDE 229 as a destroyer escort. She underwent conversion to a destroyer helicopter escort (DDH) in the early 1960s and was officially reclassed with pennant DDH 229 on 21 October 1964.