Roberts-class monitor

Class overview
Name:	Roberts
Operators:	Royal Navy
In commission:	1 April 1941
Completed:	2
Lost:	0
General characteristics
Type:	monitor
Displacement:	Roberts: 7,973 tons (Standard) 9,150 tons (Full load) Abercrombie: 8,536 tons (Standard) 9,717 tons (Full load)
Length:	373 ft (114 m)
Beam:	89 ft (27 m)
Draught:	Roberts: 13 ft 6 in (4.11 m) Abercrombie: 14 ft 5 in (4.39 m)
Propulsion:	2 shaft, Parsons steam turbines, 2 boilers, 4,800 hp
Speed:	12.5 knots (14.4 mph)
Complement:	442 - 460
Armament:	2 × BL 15-inch Mk I guns in a single turret 8 × 4-inch AA guns (4 × 2) 16 × QF 2-pdr "pom-pom"s (1 × 8, 2 × 4) 20 × Oerlikon 20mm guns
Armour:	Turret: 13 inch Barbette: 8 inch Belt: 4-5 inches
Notes:	Ships in class include: HMS Roberts (F40), HMS Abercrombie (F109)

The Roberts class of monitors of the Royal Navy consisted of two heavily gunned vessels built during the Second World War. They were the Roberts, completed in 1941, and Abercrombie, completed in 1943.

Features of the class, apart from two 15-inch guns in a twin mounting (taken from two First World War era Marshal class monitors), were shallow draught for operating inshore, broad beam to give stability (and also resistance to torpedoes and mines) and a high observation platform to observe fall of shot.

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