The rules I was talking about were put in place so that the folks working on those ships didn't blow the fucking things up by mistake. Imagine some guy sitting on the aft deck, lighting a cigarette, and wham. Have you ever seen an explosion of liquid natural gas. Similar to an atomic bomb going off. There wouldn't be enough of anything left to even identify it as a ship, never mind those who served on it.
As for the pirates, how about the US provide (for a fee of course) some RPV's (as in predator aircraft) along with their support crews, to patrol the heaviest traveled sectors of Eastern Africa, and when these attacks arise, let them cut loose with a missile or two. Those small boats wouldn't be coming home, and neither would the pirates, who would be swimming with the sharks. A fitting end to those low life scum. As well, we'd gain much needed revenue from renting the predator operation to the Arab nations whose ships and oil and LNG are the ones that are being hijacked. Then when they get used to our protection, we could raise the price, say 20 fold.
They would of course pay, because it would still be cheaper than what they would be paying in ransom for their ships and crews, never mind their crude oil and gas. And as always, turnaround is fair play. How's that for putting some folks back to work, while at the same time providing a much-needed insurance policy to the oil producing countries, and some positive revenue for the good ole US of A.