[QUOTE=Koxinga]
In two separate threads, nobody was able to answer my question of whether a navy or merchant vessel would legally be able to hang or shoot pirates while in international waters.
[/QUOTE]
Well a US Navy vessel would not be legally allowed to hang a pirate or shoot them once captured and rendered harmless. So I can answer small part of your question at least.
I can’t speak to other Navies and I really cannot speak to Maritime Law.