Pipe Wrench

As its name suggests, a Pipe Wrench is a wrench used to adjust pipes.

Role on S.O.S. Island
The pipe wrench given to you by the Pequod's mechanic. It is later used to adjust the setting on a Whale Caller to call the White Whale, who swallows you and Captain Boomer, then you both reappear back out of the whale and on land.