I have a copy of Starship! by Flagship Games, which is a 3-D ship combat game, where you can create any ships you can imagine.
It includes a basic “vector” system based on Velocity and Thrust, with those interacting with the Ship’s Stress Number to determine what turns might cause damage.
They also talk about ease of play and playability, and “eliminates complicated mathematics” around movement, no plotting, etc. Movement rules are 5 pages with lots of white space.
BGG summary and one review. I think this has been waaay out of print for some time. There is not even a publication date on the version I have (same as BGG version)
https://boardgamegeek.com/boardgame/30578/starship-3d-miniature-space-combat