The blockade of Wonsan was the longest naval blockade in modern history, lasting 861 days and denying North Korea use of a strategically vital port.
Key Facts
- Duration
- 861 days
- Start date
- February 16, 1951
- End date
- July 27, 1953
- Distinction
- Longest naval blockade in modern history
- Primary blockading force
- United States Navy (under UN command)
By the Numbers
Location
Cause → Event → Consequence
During the Korean War, the port city of Wonsan held strategic importance for the North Korean Navy and as a logistical hub for communist forces. United Nations commanders sought to deny its use and disrupt enemy supply lines by establishing a naval blockade beginning February 16, 1951.
UN naval forces, led primarily by the United States, maintained a continuous blockade of Wonsan for 861 days, from February 16, 1951, to July 27, 1953. Warships and naval aircraft kept North Korean vessels out of the port and subjected the city to sustained bombardment, while North Korean artillery fire against the fleet proved largely ineffective.
The blockade successfully diverted communist troops from the front lines and heavily damaged the city of Wonsan. It denied North Korea the operational use of the port for the remainder of the war and became recognized as the longest naval blockade in modern history.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Side B
1 belligerent