With its roots dating back to the late 1940s and the de Havilland Comet airliner, the Nimrod already had pedigree when it first appeared in the late 1960s in place of the Avro Shackleton in the Maritime Reconnaissance role. Fewer than fifty were built for the RAF, the type being steadily upgraded throughout its career right up to its retirement in 2011. Compared to the Shackleton, the Nimrod brought comfort and reliability to its multi-role long-range...