River class destroyer

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For other naval ship classes of the same name, see River class.

River or E class

 RN Ensign
General characteristics
Displacement: 545 - 590 tons light
Length: 225 ft - 233 ft 6 in (71.2 m) overall
Beam: 23 ft 6 in
Draught: 10 ft
Propulsion: Vertical triple expansion steam engines, 2 shafts, 7,000 - 7,500 ihp (5,600 kW)
Speed: 25.5 knots
Range: 120 tons coal, ?
Complement: 70
Armament:

4 x QF 12 pdr 12 cwt Mark I , mounting P Mark I,
2 x single tubes for 18 in torpedoes

The River class (re-designated in 1913 as the E class) destroyer was a heterogeneous class of torpedo boat destroyer (TBD) built to assorted builders' designs for the Royal Navy at the turn of the 20th century, which saw extensive service in World War I. All the ships were named after British rivers, and as such were the first Royal Navy destroyer class to be named systematically (see the article naming conventions for destroyers of the Royal Navy for more details).

Like their predecessors - the "turtle-back" destroyers of the 1890s - they were built to the designs of their individual builders, and thus there were considerable variations. But in the River group of designs can be seen the genesis of the "true destroyer", with the typical weatherly raised forecastle and a balanced armament of guns and torpedoes. This was a departure from previous British designs that had a low "turtle-back" forecastle, which, although intended to clear the bows, caused them to dig in to the sea, resulting in a very wet conning position. As a result of this, and with a general increase in size and more solid construction, the Rivers became the first truly ocean going and useful s torpedo boat destroyers (TBD) in Royal Navy service.

Despite making only 25 knots (previous classes had made 27 to 30 knots (56 km/h) under the most favourable conditions), the increased seaworthiness meant that they could maintain this speed into a sea and that they remained workable and fightable at the same time. Notwithstanding a variety of design differences, all ships had either two broad funnels or two pairs of narrow funnels. The armament was improved over earlier classes to four QF 12 pounder guns, carried on a bandstand on the forecastle, two sided abreast the wheelhouse at main deck level and the fourth gun aft. The torpedo tubes were carried singly, one between the funnels and one aft.

All ships were coal fired and had triple expansion steam engines, except Eden, Stour and Test which were powered by steam turbines. The Eden had three screws on each of her two shafts, to transmit the power at the high revolutions of the direct drive turbines.

All ships surviving the war were sold out of service by late 1920.

[edit] Ships

Thirty-four ships were ordered - ten ships under the 1901-02 Programme, eight ships under the 1902-03 Programme (with one extra purchased when Palmers built it on speculation), and fifteen ships under the 1903-04 Programme; two additional vessels (also built on speculation) were purchased in 1909.

originally Derwent type; all built by Hawthorn Leslie, Hebburn, Newcastle upon Tyne.

originally Erne type; all built by Palmers Shipbuilding and Iron Company, Jarrow.

originally Ribble type; all built by Yarrow Shipbuilders, Poplar.

originally Foyle type; all built by Laird Brothers (from 1903 Cammell Laird), Birkenhead.

originally Kennet class; all built by J I Thornycroft, Chiswick.

originally Ness type; both built by J. Samuel White, Cowes.

originally Stour type; both built 1905 by Cammell Laird and Company, Birkenhead, on speculation, and purchased by the Royal Navy December 1909.

[edit] Notes and references

  • Destroyers of the Royal Navy, 1893-1981, Maurice Cocker, 1983, Ian Allan ISBN 0-7110-1075-7
  • Jane's Fighting Ships, 1919, Jane's Publishing

[edit] See also

  • River class — for a list of other ship classes named after rivers