gistfile1.txt

<form action='/pirate' method="POST">
  <input ... name="pirate[name]" />
  <input ... name="pirate[weight]" />
  <input ... name="pirate[height]" />
  <input ... name="pirate[ships][0][name]" />
  <input ... name="pirate[ships][0][type]" />
  <input ... name="pirate[ships][0][booty]" />
</form>