See Singapore’s Straits Times, February 18, 2019 article
"Invincible, first of Singapore's biggest and most advanced submarines, launches in Germany"
at https://www.straitstimes.com/singapore/singapores-first-type-218sg-submarine-launched-in-germany-named-invincible
This concerns Republic of Singapore "Ship" (RSS) Invincible - name allotted to the first of four TKMS 218SG's ordered by Singapore in 2013 and first launched in Germany on February 18, 2019.
Submarine Matters'coverage of the Type 218SG goes back to 2013 and 2015 (with specifications) with many other articles at https://gentleseas.blogspot.com/search?q=218sg
Also see the wikipeadia entry quoting Submarine Matters at https://en.wikipedia.org/wiki/Invincible-class_submarine#cite_note-gentleseas-5
"Invincible, first of Singapore's biggest and most advanced submarines, launches in Germany"
at https://www.straitstimes.com/singapore/singapores-first-type-218sg-submarine-launched-in-germany-named-invincible
Submarine Matters'coverage of the Type 218SG goes back to 2013 and 2015 (with specifications) with many other articles at https://gentleseas.blogspot.com/search?q=218sg
Also see the wikipeadia entry quoting Submarine Matters at https://en.wikipedia.org/wiki/Invincible-class_submarine#cite_note-gentleseas-5
(Source Singaporean Ministry of Defence via Singapore's Straits Times February 18, 2019).
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Tomorrow details on what Singapore's submarines do.
Pete