It is difficult to see in the image on the left, but the ship actually has fake cannon holes painted on it's hull to give the appearance that it was an armed vessel. Ballinger The Ballinger class of vessels were 120 ton clinker-built two masted ships. A contemporary of the cog, ...
Submarine, any naval vessel that is capable of propelling itself beneath the water as well as on the water’s surface. This is a unique capability among warships, and submarines are quite different in design and appearance from surface ships. Submarines