Browse Entries - H
- The Hall Torpedo (1887 - )
- Hampden, Augustus Charles Hobart- (1822 - 1886), Naval captain
- The Harvey Torpedo (c. 1869 - )
- Harvey, Frederick, Naval captain
- Harvey, John
- Herreshoff Manufacturing Company (1878 - )
- Herreshoff, James Brown (1834 - 1930), Chemist, Engineer and Inventor
- Herreshoff, John Brown (1841 - 1914)
- HMS Dreadnought (1906 - )
- HMS Lightning (1876 - 1896)
- HMS Polyphemus (1881 - 1903)
- HMS Shah (1873 - )
- Hobart Pasha
- see Hampden, Augustus Charles Hobart- (1822 - 1886), Naval captain
- Holland, John Philip (1840 - 1914), Engineer
- The Howell Torpedo
- Howell, John Adams (1840 - 1918), Inventor and Naval officer
- Hoyos, Georg (c. 1842 - 1904)
- The Huascar (1864 - )
- Humphrys, Edward (1808 - 1867), Marine engineer