The Hammer-Yangs were tourist boats, but the Rebels captured them for their own use. Originally used to ferry civilians, they now ferry troops. They don't have any weapons, but they can carry a lot of passengers inside. There is a saying in the Regular Army, “Whenever you see a Hammer-Yang, always assume that there are at least 30 enemies inside.”
When critically damaged, the ship will tilt almost completely vertically and a Rebel will humorously try to remove the water out of the crippled vessel using a pump. When destroyed, troops will bail out of the ship and swim away, some of them ultimately drowning, but can be killed by the player if they wish.
In Metal Slug Attack, Hard-Armed Clark uses a Hammer-Yang as his special attack. Clark first rams his enemies with it and then slams the ferry at the ground. The Hammer-Yang at this point functions as a makeshift wall.
- The Hammer-Yang resembles a 1900s Tramp Steamer. It also bears a resemblance to a smaller version of the RMS Carpathia, the ship that saved half of Titanic's survivors.