BL mk 1

2x15"/42 Mark I

The BL 15 inch Mark I succeeded the 13.5-inch (340 mm) gun. It was the first British 15 inch (381 mm) gun design and the most widely used and longest lasting of any British designs, and arguably the most efficient heavy gun ever developed by the Royal Navy. It was deployed on capital ships from 1915 until 1959, and was a key Royal Navy gun in both World Wars. here is the list that used this main gun

Warships with the BL 15 inch Mark I gun:

  • Queen Elizabeth-class battleships (Five ships with eight guns each)
  • Revenge-class battleships (Five ships with eight guns each)
  • Renown-class battlecruisers (Two ships with six guns each)
  • HMS Hood - battlecruiser (Eight guns)
  • Courageous-class battlecruisers (Two ships with four guns each)
  • Erebus-class monitors (Two ships with two guns each)
  • Marshal Ney-class monitors (Two ships with two guns each)
  • Roberts-class monitors (Two ships with two guns each)
  • HMS Vanguard - battleship (Eight guns in mountings taken from Courageous and Glorious)