"What abour pirates in Somalia? They usually use super tiny embarkations and can even arrest big tankers. Because the tankers, no matter how big it is and no matter how rich its owner might be, is nothing but a mere tankers. it is not a battleship".
True, but a super tanker should not even have its paint scratched by a pirate in a rubber dinghy firing a water pistol![]()
Put a Soviet era handheld anti tank RPG in the dinghy and you'll be scratching a lot more then paint.
Anyway if you want a durable merchant ship which can swat small things, there is the anaconda