"Cast off all lines". The ship's steam horn lets out a blast. The ship thrums as the twin propellers begin to turn. Your ship pulls away from the dock. You are on your first voyage as a Seaman! You watch as the convoy slowly steams out of Halifax harbour. Sixty ships, five escorts, bound for the Mid-Atlantic Transfer Point. Suddenly anti-aircraft guns open up on all the warships. You grab your helmet and race for your action station. You can't hear or see any airplanes.

What's going on?

A. A German surface raider has snuck right up to the mouth of Halifax Harbour and our ships are firing at it! Go to "Battle Stations"

B. Someone saw a surfaced German U-Boat and we are attacking it! Go to "Battle Stations"

C. Someone has opened fire by accident. Someone is in BIG trouble. Best idea: stay out of trouble - get out of the area FAST!.

D. Relax- It's just a standard test of the guns. Ships do it at the start of every voyage