HMS Hydra (A144) the first commission of HMS "Hydra". She was decommissioned and sold to the Indonesian Navy in 1986 and renamed KRI "Dewa Kembar" (Pennant Number 932); she was still in service in 2006. There have been eight ships of the name in the Royal Navy, named for the Hydra of Greek Mythology, a serpent with many heads (though nine is generally accepted as standard), the centre one of which was immortal. The monster was overcome and slain by Hercules. The ship's badge of HMS "Hydra" depicts the monster with seven heads. The ship's motto was "Ut Herculis Perseverantia" ("Like Hercules Persevere").
5143 Heracles for "Heracles" and its moon are and kilometer, respectively. Follow-up observations in 2016 confirmed an orbital period of 17 hours for the asteroid moon. This minor planet was named after Heracles, the divine gatekeeper of the Olympus and one of the greatest heroes in Greek mythology, known for his strength and his "Twelve Labors". Heracles is the son of Zeus and Alcmena, after whom the asteroids and were named. In the Roman adaptation, Heracles is known as Hercules. The approved naming citation was published by the Minor Planet Center on 14 July 1992 (). 5143 Heracles 5143 Heracles, provisional designation