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Sopwith Rhino Triplane Bomber

Sopwith Rhino

Sopwith Rhino Triplane Bomber

First flying in October 1917, the Sopwith Rhino was a two-seat triplane bomber. Designed as a private venture by Sopwith, it featured an internal bomb load of up to 205kg. Armament consisted of a synchronised Vickers machine gun firing through the propeller disc and a Lewis machine gun in the rear cockpit.

Testing found that the aircraft was nose heavy and the Galloway Adriatic six-cylinder, water-cooled inline engine was subject to overheating. Testing was undertaken at Martlesham Heath in February and March 1918, but it had a poor ceiling and low speed, and was rejected as a service type. Only two prototypes were built.

British Submarine HMS K4

HMS K-4 on the shallows of Walney Island at low tide, January 1917

British Submarine HMS K4

HMS K4 was a K-class submarine of the British Royal Navy. Launched on 13 July 1916, she was commissioned on 1 January 1917.

K4 had an accident prone career, first being stranded on Walney Island in January 1917, followed by a collision with HMS K1 on 17 November 1917. This resulted in the loss of K1 although her crew were rescued.

On 31 January 1918, during a night time fleet exercise K4 was sunk after colliding with K6 and K7, while she was attempting to avoid K3. HMS K4 was lost with all hands.

Italian Battleship Leonardo Da Vinci

Leonardo da Vinci

Italian Battleship Leonardo Da Vinci

The third of the Conte di Cavour-class battleships, Leonardo da Vinci was launched on14 October 1911 and commissioned into the Italian Regia Marina on 17 May 1914. She saw no action during the First World War and was sunk by internal explosion on 2 August 1916. Italy blamed the loss on Austro-Hungarian saboteurs although the loss may have been accidental.

The wreck was refloated and righted, but plans to refurbish her were cancelled due to budgetary constraints. The hulk was sold for scrap in 1923.

Displacement23,088 long tons (23,458 t) (standard)
25,086 long tons (25,489 t) (deep load)
Length176 m (577 ft 5 in) (o/a)
Beam28 m (91 ft 10 in)
Draft9.3 m (30 ft 6 in)
Installed power20 × water-tube boilers
31,000 shp (23,000 kW)
Propulsion4 × shafts; 3 × steam turbine sets
Speed21.6 knots (40.0 km/h; 24.9 mph)
Range4,800 nmi (8,900 km; 5,500 mi) at 10 knots (19 km/h; 12 mph)
Complement31 officers and 969 enlisted men
Armament3 × triple, 2 × twin 305 mm (12 in) guns
18 × single 120 mm (4.7 in) guns
14 × single 76.2 mm (3 in) guns
3 × 450 mm (17.7 in) torpedo tubes
ArmorWaterline belt: 80–250 mm (3.1–9.8 in)
Deck: 24–40 mm (0.94–1.57 in)
Gun turrets: 240–280 mm (9.4–11.0 in)
Barbettes: 130–230 mm (5.1–9.1 in)
Conning tower: 280 mm (11 in)

Leonardo Da Vinci Being Refloated