The shipping industry is sounding the alarm as another vessel sinks in the Red Sea

[haele]

8. Don't need radar to track shipping.

Just need the ability to access unclassified AIS tracking data, which can be accessed via satellite through an app or subscription portal.
Any legit shipping or port operation has access to such programs, and all the Houthis need is someone working at the Port of Yemen to be able to get access.
A Radar site will give your weapons system more accurate data to target, but you could use AIS to send out a drone in the general area and direct targeting from the drone.

Haele