How many ships does Odysseus start with when he leaves Troy?

Odysseus left Troy with twelve ships. This was seen during his conversation with Alcinous when Odysseus told his story about his travel after the war at Troy. Odysseus begins by telling Alcinous about his encounters with Calypso and Circe, goddesses who wanted marriage but whom he resisted. He then tells him of his voyage from Troy to Ismarus, city of Cicons, where they plundered the town until they were repulsed. They proceeded with their journey, but Zeus punished them by setting them off course. They instead arrived at the land of the Lotus eaters, then at the land of the Cyclopes. It is at the land of the Cyclopes that the number of ships is explicitly mentioned. This happened when Odysseus and his men went hunting wild goats, bringing back nine goats for each of his eleven ships except for his, which got ten goats, bringing the total number of ships on his voyage to twelve.

“Heaven sent us excellent sport; I had twelve ships with me, and each ship got nine goats.”