Take the TROWEL (A).
Take the KNIFE (B).
Use the KNIFE on the rope and open the hatch; take the FISHING ROD (C).
Place the FISHING ROD in the holder; receive a WOODEN DISC (D).
Take the 2nd WOODEN DISC (E).
Use the TROWEL on the dirt; take the 3rd WOODEN DISC (F).
Remove the wood; insert the 3 WOODEN DISCS in the slots to trigger a puzzle (G).
Restore the drawing.