This is a small collection of space ship parts for easy assembly of game assets in inkscape (works the same in affinity designer or illustrator).

It's part of the tutorials on 2Dgameartguru.com. 

http://www.2dgameartguru.com/2017/06/spaceship-construction-kit-quick.html

and the build of side on space ships:

http://www.2dgameartguru.com/2017/04/space-ships-revisted-creating-fight...