Dragons in Greek mythology placed it in the heavens as the constellation Cancer. After slaying the serpent, Heracles buried the immortal head under a rock and dipped his arrows in the creature's blood to make them fatal to his enemies. In one version, the poisoned arrows would eventually prove to be the undoing of his centaur tutor Chiron, who was placed in the heavens as the constellation Centaurus. In Greek mythology Python was the earth-dragon of Delphi, always represented in the vase-paintings and by sculptors as a serpent. Various myths represented Python as being either male or female (a drakaina). Python was the chthonic
Greek frigate Hydra delivered to the Hellenic Navy on 15 October 1992 and first sailed in Greek waters on 28 January 1993. The crest of the frigate "Hydra" is the same as that of her predecessor. It is based on one of the flags which the ships of Hydra sailed under during the 1821 revolution. In April 1988, the Hellenic Navy proposed and approved the four frigates of the MEKO 200 type in an effort to modernize its fleet. After a lengthy negotiation process, the following contracts were signed to fulfill the program: Greek frigate Hydra Hydra" (F-452) (Greek Φ/Γ "Ύδρα) is the