May I heartily recommend two factual and highly entertaining books about corvettes, both by James B Lamb, both published by Totem Books, Toronto. The first, 'The Corvette Navy', is lost, stolen, or strayed, so I can give no details.  I can only attest to its excellence from memory. The second, 'On the Triangle  Run', was published in 1986 as ISBN 0-00-217909-1.  At the end of a fascinating book is a great description of the destruction of the Canadian Navy, at the hands not of the Kriegsmarine but of spiteful politicians and bureaucrats who abolished even the word 'Navy'. Bruce Dodd, Ottawa