HMS Alliance (P417/S67)

HMS Alliance (P417/S67) History

After the Japanese surprise attack on the US port of Pearl Harbor in Hawaii in December 1941 (throwing the Americans into a global conflict), the Royal Navy acknowledged the need to be able to traverse the vast Long-range deep-sea/"blue water" attack submarines in the Pacific. The Royal Navy has been at war since 1939, and not only has its submarines been involved in ongoing conflicts, but the fleet's voyages are not up to the task of conducting long-distance wars with Imperial Japan in the Far East.

The Amphion class submarines were part of the 1943 Emergency War Plan (EWP), which initially required 46 submarines. The progress of the war and the final surrender of the Japanese Empire in August 1945 meant that only 18 grades were laid down, and only 16 of them were completed.

The HMS Alliance (P417) becomes the seventh boat in its class, bringing with it things like a snorkel (for taking in air underwater when running on diesel power), an impressive 19 knots surface speed, and an excellent performance for long distances Crew comfort concerns and other quality patrols.

The HMS Alliance was designed by experts at Vickers Armstrong of Barrow-in-Furness, laid on 13 March 1945. She was officially launched on 28 July 1945 and commissioned with the Royal Navy on 14 May 1947 - too late to act in World War II (the war ended with Japan's defeat in August 1945) end).

Her crew consisted of 63 men, including 5 officers and 56 sailors (enlisted).

Structurally, the vessel has an overall length of 281.5 feet, a beam of 22.2 feet, and a draft of 17 feet. Power is provided by 2 Vickers 8-cylinder diesel engines with 2,150 hp each for surface work and 2 electric propulsion engines with 625 hp each for underwater work.

Two shafts are attached to the stern for propulsion.

In terms of performance, the boat has a surface speed of almost 19 knots and a submerged speed of 8 knots. When traveling on water, the range is a useful 10,500 nautical miles. Her design allowed her to stay underwater for 36 hours, and her hull was tested at a depth of 500 feet.

HMS Alliance's armament is centered around a 10 x 530 mm (21 in) torpedo tube, with 6 forward pointing and 4 rear pointing. Two bow launchers were mounted externally, as were the two rear-firing guns. Carry up to 20 torpedoes while patrolling. In addition, surface work was carried out using 1 x 4" QF (Quick Fire) Mark XX11 deck gun and 1 x 20 mm Oerlikon Anti-Aircraft Gun (AA). time The ship is also equipped with 2 x Oerlikon AA automatic cannons

Due to the end of the war, HMS Alliance completely missed the engagement of World War II - although it remained a major player in British naval operations during the ensuing East-West "Cold War". Only two lessons were completed before the battle was over.

In the post-World War II era, the Alliance took a number of other wartime diesel-electric designs and reconfigured its role as "anti-submarine warfare" (ASW) to better address the growing threat posed by the Soviet Navy's surface and the underwater fleet. For this reason, a major overhaul was carried out from 1958 to 1960, during which all external torpedo tubes and ballistic deck weapons were removed for rationalization purposes. Additional improvements were made to the hull and sail structure, while sonar was installed and a crew of seven was added to her standard operating schedule.

Underwater performance was increased to 10 knots, and her acoustic signature was reduced - although all of this came at a cost, as the vessel's underwater displacement increased to 1,620 tons.

After the work was completed, the ship was renamed HMS Alliance (S67).

In the Indonesia-Malaysian confrontation in the Far East (1963-1966), the HMS Alliance, along with Malaysia, was part of the British participation and was supported by Australia, New Zealand and Brunei. In addition to general patrol duties, the ship was used in commando operations and tested new camouflage schemes (the latter proved unsuccessful).

Commonwealth troops triumphed in the conflict that led to the formation of modern Malaysia.

Also, her career brought her back to Atlantic waters. In January 1968 she ran aground off Bembridge (Isle of Wight) with only minor damage, and in September 1971 a battery-related hydrogen buildup ignited, killing a crew member.

Now that her front-line usefulness is over, HMS Alliance was transferred to Gosport and served as a static classroom for future submariners until 1979. Space for WWII relics.

In 1981, she was consecrated as a well-preserved museum ship, but she struggled for years in outdoor conditions until an effort was made to restore the ship to a more aesthetically pleasing form in 2011. With donations, the ship has been transformed both inside and out, adding environmental elements to allow visitors to "participate" in underwater life. Completed in 2014, the ship is to date (2020) in its reborn state at the Royal Navy Submarine Museum.

She was the only surviving ship of her kind.

Specification

Basics

Years of Service

1947

Origins

UK

Status

stop service

Reserved.

supplement

61

staff

Class information

Class

Amphion Class/Class A

Class Size

18

ships

Class

HMS Ambion (P439/S43); HMS Astute (P447/S45); HMS Auriga (P419/S69); HMS Aurichs (P426/S62); HMS Alcide (P415/S65); HMS Alder HMS Alliance (P417/S67); HMS Ambush (P418/S68); HMS Anchor (P422/S64); HMS Andrew (P423/S63) HMS Affray (P421); HMS Aenea HMS Artemis (P427/S72); HMS Alaric (P441/S41); HMS Artemis (P449/S49); HMS Ingenious (P456/S96); HMS Acheron (P411/S61); HMS Ace (P414); HMS Achates (P443)

Operators

UK

Roles

Underwater Attack

Travel below the surface to find, track and/or attack or explore areas.

Sea Patrol

Active patrolling of critical waterways and sea areas; also serves as a local deterrent against air and maritime threats.

Fleet Support

Provide support (fire or materiel) to major surface fleets in blue water environments.

Dimensions and Weight

Length

281. 4 feet

85.77m

Ray

22. 2 feet

6.77m

Draft

17. 0 feet

5.18m

Shift

1,350 t

No. submerged

1,600 t

Power and Performance

Installed Power:

2 x Vickers 8-cylinder supercharged diesel engines with 2,150 hp; 2 electric motors with 625 hp. ; 2 x axle rear.

Surface Velocity

section 18.5

(21.3 km/h)

Underwater speed

8. 0 nodes

(9.2 km/h)

Area

10,515nm

(12,100 miles | 19,473 kilometers)

Weapon

6 x 21" (530 mm) torpedo tubes (towards bow); two externally mounted 4 x 21" (530 mm) torpedo tubes (towards stern); two Installed externally. 1 x QF 4" Mark XXIII deck gun (later removed). 1 x 20mm Oerlikon anti-aircraft (AA) deck gun (later removed). 20 x torpedo reloads. Mark V mines.

Aircraft

None.