This is a simple stand to display three 1/350 scale submarine models.
I printed 2 and joined with three 150mm lengths of 10mm diameter aluminium tubing.
The rounded profiles that the models sit upon match the kits I used, YMMV.
For those interested the models depict the current UK Submarine fleet, Vanguard, Trafalgar and Astute class.
Added Namplate.
The author marked this model as their own original creation.