Dryad-class torpedo gunboat

The Dryad-class torpedo gunboat was the last class of torpedo gunboat built for the Royal Navy. This type of vessel was rapidly replaced by the faster torpedo boat destroyer, and all of the class were converted to minesweepers during World War I, with the exception of Hazard, which became a submarine depot ship.

Design

Ordered under the Naval Defence Act of 1889, which established the "Two-Power Standard", the ships were contemporary with the first torpedo boat destroyers, a type which subsequently superseded the torpedo gunboats. With a length overall of 262 ft 6 in (80.01 m),^[1] a beam of 30 ft 6 in (9.30 m)^[1] and a displacement of 1,070 tons,^[1] these torpedo gunboats were not small ships by the standard of the time; they were larger than the majority of World War I destroyers.

Machinery

They were equipped with two sets of vertical triple-expansion steam engines, with two locomotive-type boilers, driving through twin screws. This layout produced 3,500 indicated horsepower (2,600 kW) giving them a speed of 18.2 knots (33.7 km/h); Halcyon was uprated to produce 6000 ihp, giving her a speed of approximately 20 knots (37 km/h). They carried between 100 and 160 tons of coal and were manned by 120 sailors and officers.^[1]

Armament

The armament when built comprised two QF 4.7-inch (12 cm) guns, four 6-pounder guns and a single 5-barrelled Nordenfelt machine gun. Hussar as built mounted only one QF 4.7-inch gun, two 12-pounders and one 6-pounder. The primary weapon was five 18-inch (450-mm) torpedo tubes,^{[Note 1]} with two reloads.^[1] On conversion to minesweepers in 1914 two of the five torpedoes were removed.^[1]

Ships

Notes

^ British "18 inch" torpedoes were 17.72 inches (45.0 cm) in diameter

References

^ a b c d e f g h i j k l m Winfield (2004), p.307

Bibliography

Wikimedia Commons has media related to Dryad-class torpedo gunboat.

Brown, Les (2023). Royal Navy Torpedo Vessels. Barnsley, UK: Seaforth Publishing. ISBN 978-1-3990-2285-9.
Colledge, J. J.; Warlow, Ben (2006) [1969]. Ships of the Royal Navy: The Complete Record of all Fighting Ships of the Royal Navy (Rev. ed.). London: Chatham Publishing. ISBN 978-1-86176-281-8.
Winfield, R.; Lyon, D. (2004). The Sail and Steam Navy List: All the Ships of the Royal Navy 1815–1889. London: Chatham Publishing. ISBN 978-1-86176-032-6. OCLC 52620555.