After graduating from the Hanseong Foreign Language School [ko], he went to Japan as a government scholarship student in 1895 after being recommended by Park Yung-hyo.

[2][3] In 1900, when the Imperial Korean Armed Forces introduced the first modern warship, the KIS Yangmu, by the appointment of Emperor Gojong, Sin Sun-seong was appointed as the captain.

On August 28, 1910, on the eve of the Japan–Korea Treaty of 1910, Sin took down the Taegeukgi from the ship at Gwangjeho Lake and carefully stored it before donating the flag to the state where it is currently preserved at the Incheon Naval Museum.

[4][5] When Chosun First Co., Ltd. was founded in 1912, he transferred the Guangjae to the company and he worked as a captain of the current merchant ship.

[6] In 1917, Sin moved to Incheon with his family and later died there on February 7, 1944.