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").
Ceyx of Trachis Ceyx of Trachis In Greek mythology, Ceyx (; Ancient Greek: Κήϋξ, "Kēüx") was a king of Trachis in Thessaly. He received Heracles, and Heracles's sons later fled to him. Some accounts make him Amphitryon's nephew, with Heracles building Trachis for him. Muller supposes that the marriage of Ceyx and his connection with Heracles were the subjects of ancient poems. Ceyx befriended Heracles and offered him protection against King Eurystheus. Ceyx's son Hippasus accompanied Heracles on his campaign against King Eurytus of Oechalia, during which Hippasus was slain in battle. Ceyx also had a daughter named Themistonoe, who married King Cycnus.