OK, now we're back into the park, and can really explore. Go up the long stairs to the pirate ships. You have to get 8 coins.

It starts easy. There is 1 at the beginning. #2 is on first ship to R.

The 3rd is on the second ship. Now you have to jump from the second ship's nose off to the grid. All 5 remaining red coins are up on this grid, so just climb across to get them. The shiny is at the very end.

Super Mario Sunshine Walkthrough