Keywords: NH 84470 - Torpedo Chart - cropped.png en British engraving of several different types of torpedoes of 1872-84 with views of shore based torpedo tubes and the tubes of HMS Polyphemus Naval History and Heritage Command Cropped by uploader https //www history navy mil/our-collections/photography/numerical-list-of-images/nhhc-series/nh-series/NH-84000/NH-84470 html history navy mil author 1885 <gallery>NH_84470_-_Torpedo_Chart tiff Original tiff version</gallery> Torpedoes HMS Polyphemus ship 1881 PD-old-70-1923 |