I made a rough (only like a quarter done) drawing of the Malmo class destroyer I thought up.
These are supposed to be my largest ships, the Malmo in particular being the Flagship. I would have 2 of em with maybe one more being built.
It should have an armament like this
3x120mm Cannon (30 RPM)
12x40mm Bofors AA
4x500mm Torpedo Tube
2x6 Tube Depth Charge Mortar