If the SS report is accurate then the design has some problem. Also, the 40mm guns should be machineguns and while the SS report says it has a transom stern, the drawing doesn't.
Apparently translating from "picture" to "Springsharp" is not one of my strong points.
As for the 40mm being MG's, when I do that it gives me a message that says
Warning: Calibre too large for machine gun - 3rd battery. Unless that is normal and its supposed to do that.