Mack (ship)

Mack is in shipbuilding a name for a combination of mast and smoke (English stack). The name originates from the contraction of the English terms " mast " and " stack". Macks are usually used on war ships, where they are a space -saving way to accommodate extensive electronic equipment. The U.S. Navy's guided missile cruiser of the Leahy - class were the first ships with a Mack.