At the moment, it seems like spawning a turret (or anything else) from a blueprint just randomly place it far away from the player location. But if you want to spawn a large inner turret, to put inside your ship, for example, a pre-build power- and/or shield-transfer turret for big ships, it might be nearly impossible to get that turret into the ship after the hull was built. I think it is usual for many player to build/download the hull of the ship first, to get a specific...
Control location of spawning from blueprint
Control location of spawning from blueprint