I've been mildly miffed by one-shot weapons since their implementation, oh so long ago. I remember the days when fights were a matter of who could aim better, rather than who could aim a single shot. - Virus
There is no reason to load a transport or train with weapons unless you like fighting NPC pirates. Mine has standard transport turrets and I only needed them against the massive numbers of Mollys in New Castle where I bought my large train. The player pirates will whipe you out in no time. You have no defence or maneuverability in a transport/train.
As stated before, you best defence is to run like mad. F1-ing is a very poor defence, it is considered cowardly and cheating. If a player pirate attacks you, take it like a man. Try and escape or outsmart him. Trains often can get away. It's only cargo, you can re-buy and make it up later. This is a game, . . . role-play a little.
BabyDoc
BabyDoc: Large Train
DragonKnight: Liberty Assault Frigate
Shadowen: Albatross Frigate
[MiD]The_Enforcer[Ace]: Rheinland bomber
[DJC]The_Kraken: Heugenot Cruiser