In Homer's Odyssey, Odysseus, after leaving Calypso's island, is shipwrecked by Poseidon and washes ashore in the land of the Phaeacians. Odysseus encounters Nausicaa, the daughter of the Phaeacians king, and she directs him to go to her father's palace and ask him and her mother for assistance.
On the way to the palace, Odysseus meets Athena, who is disguised as a young girl. Athena tells Odysseus about the Phaeacians and comments on their ships, which she says "are as quick as a bird in flight, or a thought" (Kline translation).
I have not been able to find any other similes about the Phaeacians ships in Odyssey 7, so I am assuming the questioner will take the comparison to a bird as one simile and the comparison to thought as the other simile.