Question: What is the name of the ship during the Battle of Haeju that sunk a North Korean vessel?
About the article "Korean War", section "Naval warfare".

Candidate passages:
The Battle of Haeju was a small naval battle during the main phase of Korean War.
Off Haeju Bay in the Yellow Sea, on September 10, 1950, days before the Battle of Inchon, South Korean Navy patrol boat "PC-703" encountered a North Korean Navy minelayer sailing vessel.
After a brief fight, the North Korean minelayer was sunk with a loss of all crew and no South Korean casualties were reported.
After the minelayer's sinking, "PC-703" discovered that the sunken vessel had laid a mine field at the mouth of the Haeju Man and then reported to base the location of the sea mines.
Two days later on September 12, "PC-703" encountered three small transports and sank them.
The three supply vessels were most likely unarmed.  
Haeju has a military and civilian dual purposes air station (HAE), with a 12/30 runway (Haeju Airport).
Haeju also has one of the major economic and military ports in North Korea.
It is connected to Sariwŏn via the Haeju Line. 
Haeju is a city located in South Hwanghae Province near Haeju Bay in North Korea.
It is the administrative centre of South Hwanghae Province.
As of 2000, the population of the city is estimated to be 236,000.
At the beginning of 20th century, it became a strategic port in Sino-Korean trade.
Haeju has chemical-related enterprises and a cement factory. 
Haeju Airport is an airport located in Haeju, South Hwanghae, North Korea.
Haeju Airport is controlled by the Korean People's Army.
The airport mainly operates military flights but also has a limited number of civilian flights.
This airport is notorious to South Korean intelligence authorities, because former North Korean Intelligence agents frequently use it as a transfer point.
The single runway 12/30 is 6200x289 ft (1890x88 m).
During the Korean War the USAF designated the airfield as K-19. 
Because neither Korea had a large navy, the Korean War featured few naval battles; mostly the combatant navies served as naval artillery for their in-country armies.
A skirmish between North Korea and the UN Command occurred on 2 July 1950; the US Navy cruiser USS "Juneau", the Royal Navy cruiser HMS "Jamaica", and the frigate HMS "Black Swan" fought four North Korean torpedo boats and two mortar gunboats, and sank them.
During most of the war, the UN navies patrolled the west and east coasts of North Korea and sank supply and ammunition ships to deny the sea to North Korea.
Aside from very occasional gunfire from North Korean shore batteries, the main threat to US and UN navy ships was from magnetic mines the North Koreans employed for defensive purposes.
During the war, five U.S. Navy ships were lost (two minesweepers, two minesweeper escorts, and one ocean tug) all of them to mines, while 87 other warships suffered from slight to moderate damage from North Korean coastal artillery.
The USS "Juneau" sank ammunition ships that had been present in her previous battle.
The last sea battle of the Korean War occurred at Inchon, days before the Battle of Incheon; the ROK ship "PC 703" sank a North Korean mine layer in the Battle of Haeju Island, near Inchon.
Three other supply ships were sunk by "PC-703" two days later in the Yellow Sea.