The ''Abercrombie'' class of

monitor Monitor or monitor may refer to: Places * Monitor, Alberta * Monitor, Indiana, town in the United States * Monitor, Kentucky * Monitor, Oregon, unincorporated community in the United States * Monitor, Washington * Monitor, Logan County, West ...

s served in the

Royal Navy The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against F ...

during the

First World War World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...

History

Abercrombie class monitor 14-inch turret

The four ships in this class came about when the contracted supplier of the main armament for the

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battleship A battleship is a large armored warship with a main battery consisting of large caliber guns. It dominated naval warfare in the late 19th and early 20th centuries. The term ''battleship'' came into use in the late 1880s to describe a type of ...

being built in Germany was unable to supply due to the British

blockade A blockade is the act of actively preventing a country or region from receiving or sending out food, supplies, weapons, or communications, and sometimes people, by military force. A blockade differs from an embargo or sanction, which are le ...

. The company –

Bethlehem Steel The Bethlehem Steel Corporation was an American steelmaking company headquartered in Bethlehem, Pennsylvania. For most of the 20th century, it was one of the world's largest steel producing and shipbuilding companies. At the height of its succe ...

in the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

– instead offered to sell the four twin

gun turret A gun turret (or simply turret) is a mounting platform from which weapons can be fired that affords protection, visibility and ability to turn and aim. A modern gun turret is generally a rotatable weapon mount that houses the crew or mechani ...

s to the Royal Navy on 3 November 1914. The Royal Navy was using obsolete

pre-dreadnought battleship Pre-dreadnought battleships were sea-going battleships built between the mid- to late- 1880s and 1905, before the launch of in 1906. The pre-dreadnought ships replaced the ironclad battleships of the 1870s and 1880s. Built from steel, prote ...

s for shore bombardment in support of the army in

Belgium Belgium, ; french: Belgique ; german: Belgien officially the Kingdom of Belgium, is a country in Northwestern Europe. The country is bordered by the Netherlands to the north, Germany to the east, Luxembourg to the southeast, France to th ...

, and a design for a shallow-draught warship (known as "Monitors") suitable for shore-bombardment was quickly designed and built to use these turrets. The ships were laid down and launched within six months. The ships carried a single main gun turret forward of a tripod mast, which was itself in front of a single funnel. A secondary armament of two 12-pounder (76 mm) guns was fitted, with a single 3-pounder (47 mm) anti-aircraft gun and a 2-pounder

pom-pom A pom-pom – also spelled pom-pon, pompom or pompon – is a decorative ball or tuft of fibrous material. The term may refer to large tufts used by Cheerleading, cheerleaders, or a small, tighter ball attached to the top of a hat, al ...

completed the ships armament.Gardiner and Gray 1985, p. 44. The monitors had a box-like hull, with very bluff bow and stern, and were fitted with

anti-torpedo bulge The anti-torpedo bulge (also known as an anti-torpedo blister) is a form of defence against naval torpedoes occasionally employed in warship construction in the period between the First and Second World Wars. It involved fitting (or retrofittin ...

s. In order to speed construction, it was intended to use off-the shelf merchant ship engines, giving about , which were expected to drive the ships to . The rushed design, however, meant that the ships were much slower than expected — ''Raglan''s engines gave but the ship could only reach .Gardiner and Gray 1985, pp. 43–44. During the planning and build, they were to be the ''Styx''-class named after four American figures;

General A general officer is an Officer (armed forces), officer of highest military ranks, high rank in the army, armies, and in some nations' air forces, space forces, and marines or naval infantry. In some usages the term "general officer" refers t ...

Ulysses S. Grant Ulysses S. Grant (born Hiram Ulysses Grant ; April 27, 1822July 23, 1885) was an American military officer and politician who served as the 18th president of the United States from 1869 to 1877. As Commanding General, he led the Union Ar ...

, General Robert E. Lee,

Admiral Admiral is one of the highest ranks in some navies. In the Commonwealth nations and the United States, a "full" admiral is equivalent to a "full" general in the army or the air force, and is above vice admiral and below admiral of the fleet, ...

David Farragut David Glasgow Farragut (; also spelled Glascoe; July 5, 1801 – August 14, 1870) was a flag officer of the United States Navy during the American Civil War. He was the first rear admiral, vice admiral, and admiral in the United States Navy. Fa ...

and General

Stonewall Jackson Thomas Jonathan "Stonewall" Jackson (January 21, 1824 – May 10, 1863) was a Confederate general during the American Civil War, considered one of the best-known Confederate commanders, after Robert E. Lee. He played a prominent role in nearl ...

and they were launched under these names. Because the United States was still a neutral power at that time, using these names would have been undiplomatic and so they were renamed as simply ''M1'' through ''M4'' before completion, then receiving their final names. The design included a

seaplane A seaplane is a powered fixed-wing aircraft capable of takeoff, taking off and water landing, landing (alighting) on water.Gunston, "The Cambridge Aerospace Dictionary", 2009. Seaplanes are usually divided into two categories based on their tec ...

for spotting the guns, but it was found that land-based aircraft were more effective; as monitors, they would never operate in the open sea, and storing the seaplane on top of the turret meant it had to be removed to avoid damage, even if not required before the guns could fire.

Ships

References

Bibliography

* &nbs
Vol. 1
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Vol. 2
* * *Dittmar, F. J. & Colledge, J. J., "British Warships 1914-1919", (Ian Allan, London, 1972), * * *Gray, Randal (ed), "Conway's All the World's Fighting Ships 1906–1921", (Conway Maritime Press, London, 1985), * {{WWI British ships Monitor classes