Predictably, attempting to assemble Tempest with these unused player ships enabled completely hangs the assembly and link process on my emulated PDP-11. I definitely want to see if I can get a version of the game running with these unused claw designs!
A detail I'd never noticed in the #tempest tankers before. If they break up into 'pulsars' when you shoot them they contain a little pulsar badge on the front!
I think these are all in the same family. They kind of look like stages in an animation, but they don't at all resemble the player's ship that was used eventually. They are obviously much more complex articles than the final product!