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Home» News»Singapore Navy’s First Type 218SG Invincible-Class Submarine Started Sea Trials
RSS Invincible Type 218SG submarine
RSS Invincible, the first Type 2018SG submarine for the Republic of Singapore Navy leaving TKMS shipyard in Kiel to start initial sea trials.

Singapore Navy’s First Type 218SG Invincible-Class Submarine Started Sea Trials

The Republic of Singapore Navy (RSN)'s first Type 218SG submarine, RSS Invincible, started sea trials on Monday. This is the first of three « Invincible-class » submarines under construction at Thyssenkrupp Marine Systems Shipyard (TKMS) in Kiel, Germany.

Xavier Vavasseur 02 Sep 2020

Invincible is the first of four customized submarines designed for operations in Singapore’s shallow and busy tropical waters. Named Invincible, Impeccable, Illustrious and Inimitable, the new submarines will form the strategic edge of Singapore’s defence. The submarines are expected to be delivered from 2021 onwards and will replace the current ex-Royal Swedish Navy Archer– and Challenger-class submarines, which the RSN has operated for over two decades.

Displacing 2,200 tons (submerged), these submarine will have a speed in excess of 15 knots underwater. They are 70 meters long and 6.3 meters in diameter. Their armament will be deployed from 8 533mm torpedo tubes. Type 218SG are based on TKMS Type 214, with elements from the Type 212A (such as the X ruder section).

RSS Invincible Type 218SG submarine
RSS Invincible, the first Type 2018SG submarine for the Republic of Singapore Navy in the port of Kiel during its initial sea trials.

The Invincible-class submarines are equipped with significantly improved capabilities. They are fitted with Air Independent Propulsion (AIP) systems based on Fuel Cell technology, which will allow the submarines to stay submerged about 50% longer. They are also carrying a combat system designed by both Atlas Elektronik and ST Electronics.

Republic of Singapore Navy launches first Type 218SG Invincible-class submarine 2
RSN infographic

According to H I Sutton‘s World Submarines Covert Shores Recognition Guide, the Type 218SG’s design make use of TKMS experience gained with the Type 214, Type 216 and Dolphin 2 classes. The X rudder configuration will allow operation in shallow littoral waters. Special Forces operations are a major feature of the Type 218SG design, with an Horizontal Multi-Purpose Lock (HMPL) located at the bow, in addition to the 8x torpedo tubes.

The Invincible-class will replace the existing Challenger-class (foreground) and Archer-class (background) submarines currently in service with the RSN.
Republic of Singapore Navy Shipbuilding Submarine Thyssenkrupp Marine Systems TKMS Type 218SG 2020-09-02
Tags Republic of Singapore Navy Shipbuilding Submarine Thyssenkrupp Marine Systems TKMS Type 218SG
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Authors

Posted by : Xavier Vavasseur
Xavier is based in Paris, France. He holds a Bachelor’s degree in Management Information Systems and a Master of Business Administration from Florida Institute of Technology (FIT). Xavier has been covering naval defense topics for nearly a decade.

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