While in College in Kansas City SoOoooooom years ago, I worked at a 7 - 11 store (so I could have enough money
to eat). Problem was, I worked the evening shift... and at the time these stores were being knocked over (Robbed at gun point) on a regular basis. I was hit twice, both were unsuccessful for the robber.
At the time the Kansas City Police just instituted a policy where they plastered warning posters on these stores and made massive TV ads warning potential robbers that undercover and concealed police officers would be rotationally posted within and about these stores. If a robbery took place, the police would take lethal action with out warning to the robber.
They actually has some of these poor police officers hang out in the walk in coolers. On one occasion I was being robbed while officers were in my cooler and in a car outside. After I handed over the cash the robber stopped by to pick up some chips and a beer
.... he almost had a heart attack and I know he spoiled his pants when he open the cooler door and was greeted by a shotgun in the face and told to freeze. His two buddies ran out into the officers outside who had shot guns
drawn on them. In other stores across town several thieves were shot during attempted robberies in these set ups. TV news reported these stories each night. Some people didn't like the police tactics but In a few weeks these robberies almost went away.... when the added security
went away it was only a few months until the robberies slowly started again. Guess you get what you want or are willing to settle for.
I would think something similar could occur where a security
force, private or some national, could be rotated on and off ships in this area and any other where the problem occurs frequently. A security force with ability to not only repel but destroy an attacking party would / should cool the willingness to attempt these attacks.
Recently I saw on TV a story about a private security firm that assisted in supporting fishing laws by seizing offending boat at the governments request. The cost to the government
was minimal as the boat was held with a fine and or sold to pay the security team.
Lots of ways these problems could be attacked with out massive flag ships crisscrossing vast amounts of open oceans.