Helen of Troy refuge with Leda. The swan gained her affection, and the two mated. Leda then produced an egg, from which Helen emerged. The First Vatican Mythographer introduces the notion that two eggs came from the union: one containing Castor and Pollux; one with Helen and Clytemnestra. Nevertheless, the same author earlier states that Helen, Castor and Pollux were produced from a single egg. Pseudo-Apollodorus states that Leda had intercourse with both Zeus and Tyndareus the night she conceived Helen. On the other hand, in the "Cypria", part of the Epic Cycle, Helen was the daughter of Zeus and the goddess Nemesis.
Leda-class frigate improved after the introduction of iron fresh-water tanks. Lastly, captains considered the class to be "wet", a result of lively rolling and pitching causing seams to loosen. The name "Leda" was taken from Greek mythology, as was common at the time; the Greek Leda was a woman whom Zeus seduced while he was masquerading as a swan. After "Leda", the Admiralty had no more ships to this design for several years. Then with the resumption of war with France either looming or under way, the Admiralty ordered eight further ships to this design in 1802-09: In 1812 the Admiralty ordered