Pathfinder-class cruiser

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Class overview
HMS Patrol
Name:	Pathfinder
Operators:	Royal Navy
Preceded by:	Forward class
Succeeded by:	Sentinel class
In commission:	1905 - 1919
Completed:	Two
Lost:	One
General characteristics
Type:	scout cruiser
Displacement:	2,940 tons
Length:	385 ft (117.3 m) o/a
Beam:	38.4 ft (11.7 m)
Draught:	13.8 ft (4.2 m)
Propulsion:	Two 4-cylinder triple-expansion oil-fired steam engines driving twin screws
Speed:	25 knots
Range:	Carried 160 tons coal (410 tons max)
Complement:	268
Armament:	As built 10 x QF 12-pounder (76 mm) guns 8 x QF 3-pounder (47 mm) Hotchkiss 2 x 18-inch (450 mm) torpedo tubes As modified 1911/12 9 x QF 4-inch (102 mm) Mk IV guns 6 x QF 6-pounder (57 mm) Hotchkiss 2 x 18-inch torpedo tubes
Armour:	conning tower: 3 inch deck: 1.5 inch - ⅝ inch belt: 2 inch

The Pathfinder class was a two ship class of scout cruiser serving with the Royal Navy in World War I, and consisting of the ships HMS Pathfinder and HMS Patrol.

The three funnelled 'scout' cruisers were designed to operate as the lead ships of destroyer flotillas but, like other similar ships, were soon outrun by newer classes of destroyers and relegated to secondary duties. The Pathfinders were built by Cammell Laird and had only a partial armoured deck with side armour covering the engine rooms rather than the more usual full length protective deck. Pathfinder was originally to have been named Fastnet but the name was changed before construction was started. The scout cruisers had poor endurance, leading to the loss of the only scout cruiser sunk during the war, HMS Pathfinder. She was so short of coal whilst on patrol that she could only manage a speed of 5 knots making her an easy target for the German submarine U-21 and giving her the distinction of being the first warship sunk by submarine torpedo attack.

Ships

HMS Pathfinder - launched on 16 July 1904 and sunk by torpedoes fired by U-21 off the east coast of Scotland on 5 September 1914.
HMS Patrol - launched on 13 October 1904, damaged in action against German battlecruisers which raided Hartlepool in 1914. Sold for scrap on 21 April 1920.

References

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. OCLC 67375475.
Jane's Fighting Ships of World War One (1919), Jane's Publishing Company
Pathfinder class in World War I
History of the Pathfinder class
The Pathfinder class

External links

Wikimedia Commons has media related to Pathfinder class cruiser.

v t e Pathfinder-class cruisers

Pathfinder Patrol

Preceded by: Forward class Followed by: Sentinel class List of cruisers of the Royal Navy

v t e British naval ship classes of the First World War

Aircraft/Seaplane carriers	Anne^S Argus^S Ark Royal^S Ben-my-Chree^S Campania^S Empress^S Engadine^S Furious^M Manxman^S Nairana^S Pegasus^S Raven II^S Riviera^S Vindex^S Vindictive^S

Dreadnought battleships	Dreadnought^S Bellerophon St. Vincent Neptune^S Colossus Orion King George V Erin^S Agincourt^S Iron Duke Canada^S Queen Elizabeth Revenge

Pre-dreadnought battleships	Royal Sovereign Majestic Canopus Formidable Duncan King Edward VII Swiftsure Lord Nelson

Battlecruisers	Invincible Indefatigable Lion Queen Mary^S Tiger^S Renown Courageous Admiral^S^C Incomparable^X

Armoured cruisers	Cressy Drake Monmouth Devonshire Duke of Edinburgh Warrior Minotaur

Heavy cruisers	Hawkins

Light cruisers	Town^G Arethusa C^{G, C} Danae^C Emerald^A

Protected cruisers	Apollo Astraea Eclipse Blake Pearl Edgar Powerful Diadem Arrogant Pelorus Highflyer Challenger Topaze

Scout cruisers	Adventure Forward Pathfinder Sentinel Boadicea Blonde Active

Destroyer flotilla leaders	Swift^S Faulknor Marksman Parker Admiralty (or Scott)^C Thornycroft (or Shakespeare)^C

Destroyers	A^G B^G C^G D^G E^G F Cricket^G G H I K L Admiralty M Hawthorn M Thornycroft M Yarrow M Yarrow Later M R^G S^{G, C} Talisman V and W^{G, C}

Monitors	Marshal Ney Abercrombie Lord Clive Humber Gorgon M15 M29 Erebus

Minesweepers	Flower Racecourse Hunt 24^C

Gunboats	Fly Insect

Submarines	A B C D E F G H^C J K L^C M^C R^C Swordfish^S V

S Single ship of class C One or more completed after the war X Cancelled G Grouping of several classes A All completed after the war V Conversions M converted from Courageous class

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