Im trying to identify the purpose of the antennas pictured below that are in use by the US Coast Guard, CBP and other law enforcement vessels. Generally most of these vessels have antennas for VHF marine, AIS, agency specific, GPS, etc. My understanding is that this particular antenna is most likely VHF. I found this link that possibly identifies the antenna: Morad Antenna. So even if I’m correct and this is indeed the antenna they are using, why use this type? Why not a “standard” Fiberglas marine VHF? All I can think of is gain. Maybe. Hoping that someone with experience in this cane chime in.