The sources I found suggested 2100m. It's supposed to be roughly twice the size of Galactica. Complement is supposed to be 100-150 raiders. My intent was to build it 3/4 scale... I just measured, and the straight arm is 500 blocks long. When I did the mirror in SEToolbox I saw "1535m" and figured that was length; it was width. Length is 2560m. Well now... I think I just found most of the problem... In my defense, the actual size was driven by the size of the raider hangar, which holds a dozen raiders in a 3x4 box, and each 1/4 section has two hangars (total of 96 raiders), the idea being that the basestars are very lightly armored and rely on missiles and raiders for offensive capabilities (as compared to the colonial capital ships that are primarily gunboats) and auto-heal (nanobots) for defense. My raider is scaled to Blinky's [Purrfect] Viper (just one or two blocks longer), and I tried to make the hangar as small as possible. Looks like I'll have to compact the hangars somehow and drop the raider count. Aside: My raiders have a scripted system for controlling ordnance that detects attached torpedoes, connects them to the toolbar, and controls detach and drop-away so the conformal missiles don't blow holes in the ship. I haven't posted it because I'm still working on the rest of the SMS controls (power/status and display). Hmm. Well, given that the entire ship is curved, I'll be burning diagonals like marshmallows at a scout campfire. Aside from reducing scale, I was considering splitting the external hull into multiple grids and connecting with landing gear. Anyone tried this?