Here There Be Monsters

Here There Be Monsters is a quest in Fallout 4.

Quick walkthrough

 * 1) Go to The Shamrock Taphouse and talk to Donny Kowalski on the dock at the rear of the building.
 * 2) Just out into the ocean is the Yangtze submarine. Investigate the submarine.
 * 3) Talk to Captain Zao.
 * 4) Get the dampening coils from Saugus Ironworks.
 * 5) Collect the nuclear warhead from the unfired ICBM in the submarine.
 * 6) Talk to Captain Zao.
 * 7) Replace the dampening coils and insert the warhead in to the reactor.