The Elder Scrolls V: Skyrim Hints

Board the Katariah.

  • 1 of 3: Do the "(Optional) Kill Commander Maro" objective if you want to, then fast-travel back to the Abandoned Shack where you first met Astrid.
  • 2 of 3: Go NW from there until you reach the Katariah, then swim around it until you find the anchor chain. (Note that it's marked with a quest arrow.)
  • 3 of 3: Use the chain to enter the ship and get the next objective.