and of course, IIRC the pirates actually attacked an naval vessel already...... and were taken out, of course.
Honestly I really really doubt that they actually attacked that USN frigate at all.
There are the russian Club-K cruise missiles.
They disguised in standard 40ft cargo contaier, which can be installed on railroad flatcars, ships or trucks.
I realise that their ability to be mounted on a ship is being played up by a lot of people (Mostly by arm chair admirals, to no great surprise) but I really doubt that's the way these missiles are going to be employed. Their real advantage is as land based coast defence. Put them on a civilian truck and it'll be all but impossible to spot from a drone or satellite.
Besides, I can think of several much more effective things you can do with a container ship, like scuttling it in Puget sound, over the Hampton Road Beltway tunnel or in the entrance to Pearl Harbor. That would block off all the major USN bases for a good while until they can manage to remove them.
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That which does not kill me has made a grave tactical error
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