682. In illustration D039SA below, which Fire Control Plan symbol signifies equipment you would use if your fire pump (s) failed?

Symbol 19 on the Fire Control Plan represents the international shore connection, which provides a water supply to the ship's fire main if the ship's fire pumps fail. This connection allows external water pressure to be introduced into the fire main, bypassing the ship's pump system, and is the correct answer when the question specifies equipment used after fire pump failure.