The sixth volume of the series covers all submarines up to 1939, the diverse types of gunboat (from masted gun vessels through coastal "flat-irons" to river patrol craft), and sloops of various descriptions--small masted cruisers, convoy and minesweeping sloops of the Great War era, and interwar escort vessels. Also available: Volume I: Capital Ships 1895-1939 ISBN: 978-1-84832-382-7 | $85.00 | Member: $68.00 Volume II: Armoured Ships 1860-1895, Monitors and Aviation Ships ISBN: 978-1-84832-386-5 | $85.00 | Member: $68.00 Volume III: Cruisers 1865-1939, Part 1 ISBN: 978-1-47389-145-6 | $85.00 | Member: $68.00 Volume IV: Cruisers 1865-1939, Part 2 ISBN: 978-1-47389-149-4 | $85.00 | Member: $68.00