M29-class monitor

Class overview
NameM29-class monitor
OperatorsRN Ensign Royal Navy
Preceded byM15 class
Succeeded byErebus class
Completed5
Lost1
Preserved1
General characteristics
Class and typeMonitor
Displacement535 tons
Length170 ft (52 m)
Beam31 ft (9.4 m)
Draught6 ft 9 in (2.06 m)
Propulsion
  • Triple expansion
  • Twin screw propellers
  • Yarrow oil fuel 45 tons boilers
  • 400 hp (300 kW)
Speed10 knots (19 km/h)
Complement75
Armament
Armour
  • 1–3 in magazine box protection
  • 2.25 in belt
  • 1 in deck, turrets and bulkheads

The M29 class comprised five monitors of the Royal Navy, all built and launched during 1915.

The ships of this class were ordered in March, 1915, as part of the Emergency War Programme of ship construction. The contract for construction was granted to Harland & Wolff, Belfast, who sub-contracted the construction of M32 and M33 to Workman, Clark and Company.

The main armament of the ships, two 6-inch Mk XII guns, came from guns originally intended for the five Queen Elizabeth-class battleships which became surplus when their aft casemate mountings turned out to be unworkable and were dispensed with.