Sir, – I read with interest Admiral Peter Briggs’ robust and cogent argument in favour of nuclear-powered submarines for the RAN (Shaping Australia’s Nuclear (Submarine) Future (NR107/2). It brought to mind the two occasions when the RCN first considered nuclear propulsion for an establishment/expansion of its submarine force (late 1950s and late 1980s). The capability of the technology clearly excites and this leaps out in Briggs’ article. Given Canada’s geography, it was always clear that whatever we might do would be in consort with the Americans. This was a determining factor as to what an…