At the moment, we have two versions of the snow brig. "Shnyava1" is a military-looking ship with a white stripe through its gunports, capacity 1250, and maximum calibre 6lb. "Shnyava2" is supposed to be a trade version with an ornate blue hull, capacity 1450 and maximum calibre 9lb. Yes, that's right - the pretty trade version has both larger capacity and heavier guns than the military-looking one! I suggest swapping the guns round, so you have the choice between heavier guns or more cargo.