Being as it was one of the largest vessels in the space lanes and carried more cargo than any other freighter, it was also regarded as one of the slowest and most lumbering vessels yet capable of turret mounting planetary bombardment class weaponry that could destroy most enemies in a single well-placed shot. Panther pilots would blatantly ignore smaller pirate vessels as their shots bounced uselessly off of the ship's mighty shields.
https://elite-dangerous.fandom.com/wiki/Panther_Clipper