The number "0516" on the spinning dial lock will open the secret compartment in Captain Ziggs' quarters atop the Hub. The number is revealed in the Mayor's office atop the Center. (Using the switch on the Cantina, the extension arm, and the multi-tool to open the skylight.)
0516
it is 0516
There is no password, but the combination for the safe is 0516.
The combination for the painting in Ziggs' room is 0516
its in the museum on mainstreet of steamworks island :)
0516
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
You go to Steamworks and head to the museum and there is the Deogen
steamworks island
There is a video walkthrough at the related link below. There are written WikiAnswers solutions at the related questions, as there are for all Poptropica islands. (How do you beat Steamworks Island) (What is the walkthrough for Steamworks Island)
Steamworks island
how to do the bridge terminal on poptropica's steamworks island