"The Admiral: Roaring Currents" (Korean: 해적: 바다를 지배하는 자; Hanja: 海賊: 바다를支配하는者) is a 2014 South Korean action-adventure film directed by Lee Suk-hoon. The film is a sequel to the 2009 film "The Admiral: The Battle of Nanjung".
Here's an interesting analysis:
: The film is set in the late 16th century, during the Imjin War (1592-1598), when Yi Sun-sin, a brilliant naval strategist, led the Korean fleet to several victories against the Japanese navy. The Admiral: Roaring Currents