Three ships of the Royal Navy

Royal Navy

The Royal Navy is the naval warfare service branch of the British Armed Forces. Founded in the 16th century, it is the oldest service branch and is known as the Senior Service...

 have borne the name HMS Tartarus, after Tartarus

Tartarus

In classic mythology, below Uranus , Gaia , and Pontus is Tartarus, or Tartaros . It is a deep, gloomy place, a pit, or an abyss used as a dungeon of torment and suffering that resides beneath the underworld. In the Gorgias, Plato In classic mythology, below Uranus (sky), Gaia (earth), and Pontus...

, from Greek mythology

Greek mythology

Greek mythology is the body of myths and legends belonging to the ancient Greeks, concerning their gods and heroes, the nature of the world, and the origins and significance of their own cult and ritual practices. They were a part of religion in ancient Greece...

. A fourth was laid down, but never completed:
was an 8-gun bomb vessel

Bomb vessel

A bomb vessel, bomb ship, bomb ketch, or simply bomb was a type of wooden sailing naval ship. Its primary armament was not cannon —although bomb vessels carried a few cannon for self-defence—but rather mortars mounted forward near the bow and elevated to a high angle, and projecting their fire in a...

, formerly the civilian Charles Jackson. She was purchased in 1797 and wrecked in 1804. was a 16-gun fireship launched in 1806. She was reclassified as a sloop

Sloop-of-war

In the 18th and most of the 19th centuries, a sloop-of-war was a warship with a single gun deck that carried up to eighteen guns. As the rating system covered all vessels with 20 guns and above, this meant that the term sloop-of-war actually encompassed all the unrated combat vessels including the...

 from 1808 and was sold in 1816. was a Tartarus-class paddle gunvessel

Gunboat

A gunboat is a naval watercraft designed for the express purpose of carrying one or more guns to bombard coastal targets, as opposed to those military craft designed for naval warfare, or for ferrying troops or supplies.-History:...

 launched in 1834 and broken up in 1860.

• HMS Tartarus was to have been a Cormorant-class wooden screw gunvessel, laid down in 1860 and cancelled in 1864.