It's also interesting that piracy is still low enough of a cost that it doesn't justify rerouting ships, landing marines, or any of the other traditional responses to piracy.
It's also interesting that piracy is still low enough of a cost that it doesn't justify rerouting ships, landing marines, or any of the other traditional responses to piracy.
We wouldn't let a <pick a foreign country not too friendly with us> warship steam into Boston Harbor. Same country's oil tanker or cargo ship? Come on in.
Presumably US flagged vessels are armed?
Naturally, US military vessels, including the Coast Guard, are armed.
Nothing prevents a shipping company from saying "In order to take a job on my private ship, you are barred from bringing weapons on-board."
Nothing prevents a country from saying "If your merchant vessel desires access to our ports, it shall not be armed."
The combination of those two (effects, not necessarily codified policies or laws) means that merchant vessels aren't armed.