M29-class monitor

Class overview
Name:	M29-class monitor
Operators:	Royal Navy
Preceded by:	M15 class
Succeeded by:	Erebus class
Completed:	5
Lost:	1
Preserved:	1
General characteristics
Class and type:	Monitor
Displacement:	535 tons
Length:	170 ft (52 m)
Beam:	31 ft (9.4 m)
Draught:	6 ft 9 in (2.06 m)
Propulsion:	Triple expansion Twin screw propellers Yarrow oil fuel 45 tons boilers 400 hp (300 kW)
Speed:	10 knots (19 km/h)
Complement:	75
Armament:	2 × BL 6-inch (152.4 mm) Mk XII guns 1 × 6-pdr A/A 1 × 3-inch (76 mm) AA gun for M31 and M33
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 the M29 and M31 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.

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