A comprehensive, fully illustrated encyclopedia of river gunboats from the early 19th century to the present day.   The first recorded engagement by a steam-powered warship took place on a river, when in 1824 the Honorable East India Company's gunboat Diana went into action on the Irrawaddy in Burma. In the 150 years that followed, river gunboats played a significant part in over forty campaigns and individual actions around the world. This comprehensive reference book covers the development of riverboat warfare from the early 19th century to current riverine combat vessels in service today.   River gunboats proved to be the decisive factor in a wide range of conflicts across the world—from the New Zealand Wars to the American Civil War, and from both World Wars to the conflicts in Indochina and Vietnam. This lavishly illustrated encyclopedia describes the river gunboats that saw action, plus those converted river steamers which took part in combat. This volume also includes maps of the river systems where they operated, together with narratives of the principal actions involving river gunboats.