How a boat with just a 37mm as its main gun its BR 3.0 wen usa have this boat at just 2.3 they have one even more overpowered added on the last update the PT-262(BR2.0) with the same guns but without the 20mm
with 45 mm + 37 mm and armor
Armor and a low silhouette will greatly increase survivability relatively american PT boats.