Alarm Class Torpedo Boats Class Overview

Dimensions, machinery and performance
Length:
230' (PP)
Engines:
2 x three cylinder vertical triple expansion
Beam:
27"
Boilers:
4 locomotive (Speedy 4 Thornycroft water tube)
Draft:
12"
Shafts:
2
Displacement:
810
HP:
3,500 ihp (Speedy 5,000 ihp)
Speed:
18.7 knots (Speedy 20.5 knots) forced draught
Crew:
91
Range:
2,500 NM @ 10 knots
Construction notes:
(a):
Speedy was the only ship in the class with 3 funnels.


Armament as built
Number Carried
Type
Arrangement
Maximum Range / Ceiling
2
120mm / 45 QF
Single mounts
9,680 yards (5.5 miles)
4
47mm / 40 Hotchkiss QF
Single mounts
6,336 yards (3.6 miles)
1
Gardner Machine Gun
Single mount
5 barrel
3
14" torpedo tubes (a)
1 bow, 2 launchers
N/A
3
18" torpedo tubes (b)
1 bow, 2 launchers
N/A
Armament notes:
(a):
Alarm, Antelope, Circe, Hebe, Leda, and Renard.
(b):
Jaseur, Jason, Niger, Onyx and Speedy.


Name
Builder
Launched
Completed
Naval Construction & Armament Co. Ltd.
Barrow-in-Furness, England

May 14, 1892
July 11, 1893
Fate
Sunk Apr. 7, 1917 by mine laid by SMS U-78 (Kapitänleutnant Otto Dröscher)

Location: North Atlantic, 3mi SE of Arinagour, Isle of Coll, Scotland.
(56.35N-06.28W)

25 men lost.
(Roll of Honour)
Name
Builder
Launched
Completed
Sheerness Dockyard
Sheerness, Kent, England

June 14, 1892
May 1893
Fate
Sold July 30, 1920 to H. Auten & Co. and scrapped.
(Converted into minesweeper in 1909.)
Name
Builder
Launched
Completed
Sheerness Dockyard
Sheerness, Kent, England

June 15, 1892
Oct. 9, 1894
Fate
Sold Oct. 22, 1919 to Thomas W. Ward, Preston, England and scrapped.
(Converted into a minesweeper in 1909, converted into a submarine depot 1910.)
Name
Builder
Launched
Completed
Onyx
Laird & Brothers
Birkenhead, England

Sept. 7, 1892
Jan. 1894
Fate
Sold 1924 King, Garston, England, resold Oct. 9, 1924 to Basso, Weymouth,
England and scrapped.
(Converted into depot ship in1907, renamed Vulcan II in June 1919.)
Name
Builder
Launched
Completed
Sheerness Dockyard
Sheerness, Kent, England

Sept. 13, 1892
Mar. 1894
Fate
Sold Apr. 9, 1907 to Thames Shipbreaking Co. and scrapped.
Name
Builder
Launched
Completed
Sheerness Dockyard
Sheerness, Kent, England

Sept. 13, 1892
Nov. 1893
Fate
Sold July 14, 1920 to Cardiff Marine Stores and scrapped in Germany.
(Converted into a minesweeper in 1909.)
Name
Builder
Launched
Completed
Jaseur
Naval Construction & Armament Co. Ltd.
Barrow-in-Furness, England

Sept. 24, 1892
Feb. 13, 1893
Fate
Sold July 11, 1905 and scrapped in Portsmouth, England.
Name
Builder
Launched
Completed
Laird & Brothers
Birkenhead, England

June 12, 1892
Jan. 1894
Fate
Sold Apr. 4, 1905 to P&W MacLellan Ltd., Bo'Ness, Scotland and scrapped.
Name
Builder
Launched
Completed
Naval Construction & Armament Co. Ltd.
Barrow-in-Furness, England

Dec. 17, 1892
Apr. 25, 1893
Fate
Sunk Nov. 11, 1914 torpedoed by SMS U-12 (Kapitänleutnant Walter Forstmann)
(Note, converted into a minesweeper in 1909.)

Location: North Sea 2 miles east of Deal, England.
(51.14N-01.27E)

15 men lost.
(Roll of Honour)
Name
Builder
Launched
Completed
John I. Thornycroft & Co. Ltd.
Chiswick, England

May 18, 1893
Feb. 20, 1894
Fate
Sunk Sept. 3, 1914 by a mine laid by SMS Nautilus (Fregattenkapitän Wilhelm Schultz)

Location: North Sea, 61 miles east of Grimsby, England.

1 man lost (Officer's Steward 2nd Class Edwin Arnold Claxton, R.N.)
Name
Builder
Launched
Completed
Devonport Dockyard
Plymouth, England

July 12, 1893
May 1894
Fate
Sold May 27, 1919 to T. R. Sales and scrapped.


Page published Jan. 28, 2020



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