Panokseon

The workhorse of the Korean fleet, the Panokseon is in effect a variant of the ancient Tower Ship, used first by the Chinese and then built by the Japanese as the bune. The Panokseon is in effect a War Barge, armed with cannon and meant for use against enemy light shipping which it counters fairly well. The lack of minimum range, as well as multiple light guns means that although it is somehwat outranged by vessels carrying heavier payloads like European War Galleys, it is lethal when used to close in on enemy assets where it can use its superiority in rate of fire to let off saturation volleys to destroy enemy vessels. Like the Geobukseon, the Panokseon is meant for use in a defensive capacity, the one fending off attacks by Fire Vessels, the other against light shipping and harassing enemy medium warships.
The biggest flaw in the Panokseon (as well as the Geobukseon) lies in its near-lack of range - Galleons and War Galleys are the best units to take them out, with Galleons used to engage them to keep them from attacking your War Galleys. To this end, it is necessary to keep a flotilla of Fire Vessels on hand to burn away the enemy fleet should it get too close.