How did Gulliver reach the floating island?

Gulliver has been sailing for three days.They are attacked by pirates and easily taken over. Gulliver manages to insult the pirate captain and, as punishment, is cut loose in "a small Canoe, with Paddles and a Sail, and four Days Provisions." After five days adrift, Gulliver reaches a small island with a floating cloud that is Laputa.