Triumphant-class submarine

Triumphant Class
Class overview
Name:	Triumphant Class Attack Submarine
Builders:	Arthuristan Dynamics
Operators:	Commonwealth Navy,
Preceded by:	Swiftsure-class submarine
Succeeded by:	Triton-class submarine, Xiphos-class submarine
General characteristics
Type:	Attack Submarine
Displacement:	4,800 - 5,300 tonnes
Length:	85.4m
Beam:	9.8m
Draught:	9.5m
Installed power:	Arthuristan Dynamics SP-75 reactor (32MW), 2 x steam turbines, MTU 600 kilowatt diesel generator, Arthuristan Dynamics SPJ-77 pump jet
Speed:	32kn+ submerged
Range:	Theoretically unlimited
Test depth:	450m+
Capacity:	98
Sensors and processing systems:	Thales Sonar 2076, Atlas DESO 25 echosounder, 2 x Thales CM010 optronic masts
Armament:	6 x torpedo tubes

The Triumphant-class was a class of nuclear-powered attack submarines of the Commonwealth Navy. It was designed in the mid-70s to supplant and eventually replace the first generation SSNs of the fleet, with the namesake vessel of the class launched in 1978. Conceived as a rival to designs such as the Songoryu and 688 classes, it pioneered a number of new key technologies in submarine construction, including anechoic tiles, shrouded pump jets, as well as an innovative Integrated Digital Combat System which processes data from the new active and passive sonar suites and generate firing solutions.

The Triumphant Class was to be replaced in the 1990s by two new models - the Triton Class and the Xiphos Class. The latter was to be a dedicated hunter-killer submarine to counter enemy high performance SSNs, whereas the former were to be cheaper to build and deploy in bulk for operations against hostile shipping and land targets. Many of the new technology and equipment found in later CN submarines have been retrofitted to remaining Triumphant Class vessels, including the all-important Type 2078 sonar suite. Budgetary issues has kept the Triumphant in service to this day, albeit in heavily upgraded form.

In popular culture

• In the 1997 techno-thriller novel Deep Blue Ascension a fictional a Commonwealth Navy Triumphant-class commanded by Captain Aaron Taylor is faces off against a fictional Songoryu-class submarine S-124, an Anikatian People's Navy commanded by Captain Chung Yong-gi in the North East Sea and its 2016 movie adaptation of the same name, starring Lee Seo-jun as the fictional Captain of the S-124 Chung Yong-gi, while Donal Marino plays the fictional Arthuristan Captain Aaron Taylor.