From: Land o' Lakes, FL
Perhaps I'm assuming too much, but I'm guessing that while the pirates can amply handle a 30' skiff, they probably can't pilot a 10,000(+) ton cargo vessel.
What good does it do a pirate to capture a vessel that he can't pilot home.
The pirates assume that all they have to do is get to their prize and squat, and somebody pays the ransom. They don't have to pilot the prize, they just collect ransom and pledge of passage.
But if civilian crews and pirates know that international response will be to arrive in force, and not ransom, there is little incentive to attack a cargo vessel that you can neither pilot, and if you send a ransom request, that military force will be on it's way to kill you, instead of the ransom.
"It is obvious that you have greatly over-estimated my regard for your opinion." - Me