Leave the ship and proceed towards the amusement park (take the gangway off the ship, then the broken planks on the right - beside the big house with wide stairs leading to it, Kate will notice an automaton similar to Oscar. Since you don't have the tools, you have to leave it for now). Go through the gate that stands ajar at the top of the stairs.
Directly behind it, go left and enter the building through the shabby doors with an awning above it (as shown above). You will find yourself in a sort of a workshop - go to the other side of it (towards the bottom of the screen and left) and exit through the door in the corner.
You will be outside again, on a pier with train tracks. This pier could lead you to the ship, had it to been for a pretty big gap there, which made you go off to the beach in the first place. Go right - when you reach some toppled carts: zoom in on them and detach them all, hence removing the obstacle. Go further right and you'll reach another vehicle with another automaton inside.
Zoom in on the vehicle, especially the back of it. On the lower half of it, there's a winch with a hook there. Kate will have a brainwave and figure out a solution to the problem of wrongly moored Krystal.
When Kate removes the automaton from the vehicles, take (in zoom) a key from its right hand.
Follow the tracks to the left and through the door - back to the workshop.
Approach the worktop next to the second door (the one with a poster), on which a small chest with Voralberg emblem. In zoom, insert the key you just found at the automaton and turn it right. After opening the chest, take the second wrench on the left from the middle tray -Voralberg wrench no 10. Don't forget to take the Voralberg wrench that lies on the bottom of the box as well!
Check out the map on the wall on the right - there's important information here, next to the III circle (highlighted above) - it says 15+25. You will soon need this.
Then, take a look at the boxes lying on the table near the center of the room (also highlighted above). Take the gear from the container behind them. Exit through the door with the poster. Talk to Shaman and Kurk, they're both waiting.
From the gate leading to the contaminated area, to which Kate was brought, go left until you reach a fence behind the rocket-shaped building (you have to go through the passage between the rocket and the sitting-bear-without-a-head sort of building - it's on the left of the fountain with the mechanical octopus).
Pick up a metal shank (shank 01) lying underneath the bench (right from the yellow triangle hazard signs).
Go back towards the main gate (left from the "bear", you have to walk around the chain merry-go-round and leave the park. Go down the stairs, back to the automaton that reminded Kate of Oscar, sitting on the bench. Approach it.
Fixing Oscar's heart
Zoom in on Oscar's chest, and use Voralberg's key and turn it to the right. Open his chest by dragging your mouse to the right. Take out the automaton's heart and replace it with the Souvenir of Oscar.
Unplug the cable slots in the heart with your mouse. Plug the cable on the right to the right slot, and the one on the left to the left slot. Zoom in some more on the heart. The screw above the convex part in the center can be unscrewed with the Voralberg Wrench - unscrew it to the right with your mouse, while holding the end of the wrench. Open the cover of the convex (drag mouse to the right). You will learn that one more thing is needed - another key.