When buying engine upgrades, or very powerful engine with certain combinations of injectors and shield capacitors, some ships can go to extremely fast speed.

one of the ship that can do this, by default, is the huge battleship in alaska.

buy it, fly it, and kill the engine, and the ship speed will climb up indefinitely.

My Eagle has 300 forward firing turrets and 200 rear firing turrets
I have infinite amount of energy and insane level of shielding. I can take out a battle ship in a single pass. But hey, I'm a bad pilot, I can't even hit a planet...