Erebus class monitor

The Erebus-class monitors of the Royal Navy consisted of two vessels, Erebus and Terror. Both were launched in 1916 and saw active service in World War I off the Belgian coast. After being placed in reserve between the wars, they served in World War II, with both being sunk at the Battle of the Blockade by aircraft from the German aircraft carrier Graf Zeppelin.^[1]

Specifications[]

Type: Monitor
Service Period: August 6th, 1916 - November 7th, 1940
Characteristics:
- Length: 405 feet (123.44 meters)
- Beam: 88 feet (26.82 meters)
- Draught: 11 feet 8 inches (3.56 meters)
- Displacement: 8,000 tons (Standard); 8,450 tons (Full Load)
Crew: 204 (later 315)
Propulsion: 4 x oil-fired boilers, 2 x shaft reciprocating engines, 6,000 hp (4,500 kW)
Speed: 12 knots (22.22 km/h)
Armament (Original):
- 2 × BL 15"/42-caliber Mk.I naval guns (1x2)
- 2 × BL 6"/50-caliber Mk.XV naval guns (2x1)
- 4 × QF 3"/45-caliber Mk.IV anti-aircraft guns (4x1)
Armament (Refit):
- 2 x BL 15"/42-caliber Mk.I naval guns (1x2)
- 8 x BL 4"/45-caliber Mk.IX dual purpose naval guns (8x1)
- 2 x QF 3"/45-caliber 20 cwt anti-aircraft guns (2x1)
- 2 x QF 2-pdr anti-aircraft guns
- 8 x 12.7mm Vickers Mk.III machine guns (2x4)
Armour:
- Bulkheads: 4-inches (101.6 mm)
- Barbettes: 8-inches (203.2 mm)
- Turrets: 13-inches (330.2 mm)
- Magazines: 4-inches (101.6 mm)
- Conning tower: 6-inches (152.4 mm)
- Main deck: 2-4-inches (50.8-101.6 mm)