You have to get past the steam battery from going an input 10 to an output of 16 so a change of +6
You might find a drawbridge in the harbour.
That's a good question. :)
it's across the drawbridge
To get to the drawbridge, you go to the right of the Hub all the way to the edge of the scene. You get the key for it in Captain Ziggs' cabin.
The "crane" is a drawbridge that lowers to the right to reach the Botanical Research Lab. You will need the key to lower the bridge. (see related question)
you do nothing
They are in the Production Zone to the far right of the island. You will have to collect the Dirty Beaker from the Museum and then use the Drawbridge key to cross into the production zone. (see related question)
its in the museum on mainstreet of steamworks island :)
It is just across the drawbridge from the Hub. When you cross the bridge, use the controls that raise and lower the ball. Raising it all the way up, then bringing it down hard, is how you crack open the underground path to the production zone (botanical research lab).
It's Steamworks Island #14th Island
(The solution is at the related question "How do you beat Steamworks Island")
the crab on steamworks island is next to the living quarters