200-mm

Updated: May 5, 2025

"Your politico-military education still needs a little filling in. At Grank, we have two ships. One is the Northern Lights, sister ships of the Northern Star. The other is the cruiser Procyon, the only real warship on Ullr, with a main battery of four 200-mm. guns.

H. Beam Piper - Ullr Uprising