How did Canning and Castlereagh use naval power in diplomacy?
Short answerThey used naval visits and forward presence, backed by mobilisation when needed.
NotesNaval power supported Canning and Castlereagh's diplomacy through visits and a continuing presence near areas of interest. Mobilisation provided an additional instrument when circumstances required it. This combination offered ways to use the navy before actual fighting. For wider context, the recommended reading is Michael Partridge's work on British defence planning between 1814 and 1870, Palmerston's life from 1784 to 1865, and Gladstone.