Or due to the guns value, or the value of what ever product was involved, maybe a transaction at sea went bad and these are the guns of guys that fell overboard in a firefight.
time magazine: " Taiwan has some of the toughest gun-control laws in the world. Private ownership of firearms is largely outlawed; people convicted of illegally making, transporting or selling guns can face the death penalty. "
so you can imagine what a illegal firearm would sell for over there.
if over two weeks , 4 separate fishermen netted 4 firearms, my guess is that there is far more firearms down there, so yes, this was a gun smuggling operation, going to taiwan in a fishing boat in a busy fishing area. unfortunately for the smugglers/fishermen came upon a patrol boat and the cargo went over board.




















































