The pumps are located in a hidden area behind a wall that can only be opened by using the "Thinning" ability with Mickey's paintbrush. The entrance to this area is in the middle of the ship's deck, where the large mast is. Here's how you can access them:
1. Reach Pirate Voyage: You need to complete the first level of the game, "Mean Street," before you can access Pirate Voyage.
2. Thin the wall: Once you're on the deck of the pirate ship, look for the large mast in the center. There's a wall behind the mast. Use Mickey's "Thin" ability on the wall to make it disappear and reveal the entrance to the hidden area with the pumps.
3. Enter the hidden area: Now you can go through the opening and access the area behind the wall. You can see the pumps and other things that were hidden before.
Remember, you must be in "thin" mode to be able to use this trick.
Good luck exploring Pirate Voyage!