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{{short description|Island in Incheon, South Korea}}
{{About|the island|the film of the same name|Silmido (film)|the North Korean island|Sinmido}}

{{Infobox island
|name=Silmido
|coordinates={{Coord|37|24|06|N|126|23|30|E|dim:1100_scale:11000_region:KR-28_type:isle_source:dewiki|display=title,inline}}
|mapframe-zoom=11
|module={{Infobox Korean name
|caption=Map of Silmido and the surrounding area.
|hangul = 실미도
|hanja  = {{linktext|實|尾|島}}
|rr=Silmido
|mr=Silmido
|child=yes
}}
|image=실미도바다건너기 44997529.jpg|image_caption=A land crossing to the island (2010)}}

'''Silmido''' ({{Korean|hangul=실미도}}), or '''Silmi Island''', is an uninhabited island in Incheon, South Korea. The {{convert|0.25|km2|acre|abbr=on}} island is in the [[Yellow Sea]] and is closest to [[Muuido]], which is connected to the mainland by ferry. It is about {{convert|5|km|mi|abbr=off}} southwest of [[Yongyu Island]], where [[Incheon International Airport]] is located. Most of Silmido island consists of hills that are around {{convert|80|m|ft}} high.<ref>doopedia. (n.d.). 실미도. Retrieved from 두산백과: http://terms.naver.com/entry.nhn?docId=1222545&cid=200000000&categoryId=200003702</ref>

==Unit 684==
{{See also|Unit 684|Blue House raid}}
On January 21, 1968, a group of 31 North Korean military soldiers were sent to South Korea by [[Kim Il Sung]] to kill President [[Park Chung Hee]]. A firefight began when the commandos were just 800 yards from the [[Blue House]] (the South Korean Presidential Palace). The attempt failed and all but two of the 31 North Koreans were either killed by the South Korean security forces or committed suicide.<ref name=":0">{{Citation |last=박 |first=동찬 |title=실미도 사건 (實尾島 事件) |work=[[Encyclopedia of Korean Culture]] |url=https://encykorea.aks.ac.kr/Article/E0066580 |access-date=2024-06-12 |publisher=[[Academy of Korean Studies]] |language=ko}}</ref>

In retaliation for the attack, South Korea established a secret military unit, [[Unit 684]], to assassinate Kim Il Sung. From January 21, 1968, to August 23, 1971, Silmido served as the training ground for the unit. Under circumstances which remain unclear, the members of the group mutinied and went to [[Seoul]] in 1971, where they were killed or committed [[suicide]].<ref name=":0" />

The 2003 film [[Silmido (film)|Silmido]] is about Unit 684 and depicts the island.<ref>{{Citation |last=황 |first=혜진 |title=실미도 (實尾島) |work=[[Encyclopedia of Korean Culture]] |url=https://encykorea.aks.ac.kr/Article/E0074467 |access-date=2024-06-12 |publisher=[[Academy of Korean Studies]] |language=ko}}</ref>

==See also==
{{Portal|Islands}}
* [[Islands of South Korea]]
* [[Geography of South Korea]]
* [[Tourism in South Korea]]
* [[List of islands]]
* [[Desert island]]

==References==
{{reflist}}

{{Authority control}}

[[Category:Uninhabited islands of South Korea]]
[[Category:Islands of Incheon]]
[[Category:Islands of the Yellow Sea]]