Published Resources Details Journal Article
- Letter to the Editor: The Polyphemus
- vol. 32, 5 August 1881, p. 139
James Longridge draws the reader's attention to the fact that the design of the Polyphemus was very similar to that of a vessel that he had discussed at the 1868 meeting of the Institution of Naval Architects (Longridge, J. A. 'A monitor for coast defence; and on submarine artillery.' Transactions of the Institution of Naval Architects, vol. 9, 1868, pp. 109-114.).