Major difference between a search and stopping to investigate. Cops can investigate the driver and vehicle during a routine traffic stop. If I take off at 100 mph, is it your opinion that I'm innocent and should not be stopped before I kill a real innocent?
Nobody being targeted with a missile is compliant and allowing a quick inspection -- which is our government's right according to international law. Using a vehicle search as an analogy is totally irrelevant. A boat on the high seas is not the same as a car on a highway. Different set of laws and circumstances.
Due process? Do you even know what that means? If you're a cop being threatened by a man with a knife and you kill him, did he receive "due process" prior to being executed? No, I'm not equating this with the boat interception. I'm using it to illustrate the meaning of due process in legal terms.
.....i wish the cartels good luck in finding enough crews willing to risk dying to for way less money than they make for their employers.
Again, is there any evidence they were running from an order to stop? Even the coast guard doesn't blow up the boat, they just shoot the engine. Is the Navy not skilled enough to do that? You said no one is being targeted who is stopping for inspection, where is there evidence anyone asked them to stop?
You say international law allows the US government to stop boats for inspection, where are you getting this from? I did a search and found the below listed limited authority under international law but it doesn't mention drug movement.
A U.S. warship may only board a foreign private vessel if there is "reasonable ground for suspecting" that the vessel is involved in one of the following activities:
Piracy
The slave trade
Unauthorized broadcasting
The ship is without nationality (stateless)
The ship is, in reality, of the same nationality as the warship, despite flying a foreign flag or refusing to show its flag
If suspicions prove to be unfounded, the vessel must be compensated for any damage or loss it sustained.
If you take off from a cop at 100mph they can't summarily execute you, they can't even execute you if you are known to be a felon and flee. Prison guards are allowed to shoot a prisoner climbing over a fence to escape though but in that case they are already convicted.
What makes you think the cartels care? What makes you think they are hiring people with competitive wages/benefits rather than threatening them to kill their family if they don't deliver the drugs? Blow up one boat and they will go to the next fisherman, point a gun at his wife, and tell him to move some bundles no questions asked.
Lastly, I find the arguments to justify killing people bringing in drugs to be incompatible with the whole argument of guns don't kill people. A baggie of heroin sitting on a desk never killed anyone on it's own.