Twin Bofors Mark V with UK details, canon and mount base are different from US Bofors versions.
Bofors can be visually divided in air and water cooled, this is water version, easy to notice for the visible spring on the canon.
Not many Mark V around, so this is a rare 3D model for resin printing, could not find another one so detailed, very few missing parts,
Mostly nurb modeling, 1545 objects 7700 polygons, just 4M file size, 3 weeks modeling from 300MB pics, plans, and a couple of handbooks.