{{Use dmy dates|date=April 2022}} Two ships and two establishments of the Royal Navy have been named '''HMS ''Impregnable''''':
==Ships== * {{HMS|Impregnable|1786}} was a 98-gun second rate. This ship of the line was launched in 1786 and wrecked in 1799. * {{HMS|Impregnable|1810}} was an 98-gun second rate launched in 1810. She became a school ship in 1862, was renamed HMS ''Kent'' in 1888, HMS ''Caledonia'' in 1891, and was sold in 1906.
==Training establishment== * {{HMS|Impregnable|1862 training establishment}} was a training establishment started at Devonport in 1862, and active until 1929. As training ships were replaced or added to the establishment, each was renamed ''Impregnable'' when she took on the role: ** {{HMS|Impregnable|1810|6}} was the original school ship between 1862 and 1888. ** {{HMS|Howe|1860|6}} was HMS ''Impregnable'' between 1885 and 1911, and HMS ''Impregnable I'' between 1911 and 1919. ** {{HMS|Powerful|1895|6}} was HMS ''Impregnable'' between 1919 and 1929. ** {{HMS|Inconstant|1868|6}} was HMS ''Impregnable II'' between 1911 and 1919, and HMS ''Impregnable (Old)'' between 1919 and 1922. ** {{HMS|Andromeda|1897|6}} was HMS ''Impregnable II'' between 1919 and 1931. ** {{HMS|Black Prince|1861|6}} was HMS ''Impregnable III'' between 1910 and 1922. ** {{HMS|Ganges|1821|6}} was HMS ''Impregnable III'' between 1922 and 1929. ** {{HMS|Circe|1827|6}} was HMS ''Impregnable IV'' between 1915 and 1922. ** {{HMS|Caroline|1882|6}} was HMS ''Impregnable IV'' between 1919 and 1929. * {{HMS|Impregnable|1935 training establishment}} was a training establishment for 'hostilities only' communications ratings at Plymouth between 1935 and 1947. After decommissioning HMS ''Impregnable'' was reopened soon after, remaining in commission until 1948.
==References== *{{Colledge: Ships RN|year=2006}}
{{Ship index}} {{Italic title prefixed|3}}
{{DEFAULTSORT:Impregnable, Hms}} Category:Royal Navy ship names