ORION

Fleet

Royal Navy

Ship Type

Battleship

Nickname

–

Ship Class

Orion

Grouping

2nd Battle Squadron

Command

–

Builder's Yard

HM Dockyard Portsmouth

Budget Year

–

Construction Notes

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Date Laid Down

29.11.1909

Launch Date

20.08.1910

Completed date

–

Commission date

02.01.1912

Year laid down

–

Year launched

–

Year completed

–

Commission Year

–

Pennant No

–

Photo Details

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Related stories

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Sister ships

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Eventual Fate

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Jutland result

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Ready for action after dock repairs

–

Commander

Captain Oliver Backhouse, C.B. (Flying the Flag of Rear-Admiral Arthur C. Leveson, C.B.)

Noteable Officers

–

Crew complement

750 - 1,100

Officers

–

Ratings

–

Killed

–

Wounded

–

Prisoners

–

Displacement full Load (tons)

25,870

Artefacts Data

–

Ship's Model

–

Length (ft)

581

Length (mtrs)

177

Beam (ft)

88,7

Beam (mtrs)

27

Draught (ft)

24,6

Draught (mtrs)

7,5

Max. Speed (knots)

21

Range (miles)

12,460 km at 10kts

Range (kilometres)

–

Fuel

3,300 max fuel load & 800 tons fuel oil

Propulsion

4 Parson steam turbines supporting 18 Babcock and Wilcox water boilers and 4 shafts. Rated 27,000 shp.

Armour Main Belt

12" waterline

Deck Armour

1,5" upper & main, lower 2,5"

Turret Armour IN CM

11" face

Conning Tower Armour

11" max

Barbette Armour

10" max

Weight of armour

–

Armour / Displacement Ratio

–

Watertight compartments

–

General Notes

The first Super Dreadnought with a main calibre gun of more than 12".

Fire Control Table

Argo Plotting table

Fire Control - Clock

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Primary Gun calibre

BL 13.5" Mk V guns (342.9 mm)

No. Primary Turrets

5

Guns (No.barrels)

10

Primary gun layout

–

Rounds per main gun

100

Effective broadside guns

–

Primary shell Weight (inches or cm)

–

Primary Broadside Weight

–

Secondary Gun Calibre

BL 4" Mk VII guns (101.6 mm)

Guns (No.barrels) 2

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Rounds per secondary

–

Other Armament

–

Elevation (degrees)

–

Gunnery Range (yards)

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Gunnery Range (metres)

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Rate of Fire (rds per minute)

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Shells expended Main

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Mines dropped

–

Shells expended Secondary

–

Torpedoes fired

–

Gunnery Notes

A turret arc of fire 300 degrees. B turrets could in practice only fire broadside as the effect of the blast on A turret was intolerably high as sighting hoods had been placed on A turrets. Q turret had a broadside arc of 120 degrees.

Torpedo Type IN

–

No. tubes

3

Torpedo Type MM

21"

No. Mines

–

Torpedo Notes

submerged

References & sources

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