If you like that... Take your RF Spectacles,and look at a Plastic SailBoat, (Non-conductive Hull) sitting in Salt Water, with an LF/MF/HF Radio system installed. What is the MOST important part of the Antennas System, for this installation? Many people think it is the Antenna, and Antenna Tuner. They are dead WRONG. the most important part of the Antenna System is the RF Ground that supports the Antenna System.
so let us look at this with our RF eyes. What do we see? We see the Engine, the Electrical Wiring, the gearbox, the shaft, the propeller, any Metal Fuel Tanks, that may be bonded to the Engine electrically, and maybe a metal Fresh Water Tank. Oh yea, we also see a very nice surface layer of Slat Water. The perfect Ground Plane. Now look at just how much RF Coupling, there is between all that you see, and that Perfect Ground Plane? Well not much, just the propeller, and shaft are in direct contact. The rest are Capacitively coupled to the Ground Plane. so how do you INCREASE the capacitive coupling for a Better RF Ground? How do you make a Bigger Capacitor? You either ADD Surface Area, or bring the two plates, closer together. So here is the Test Question, for this exercise.... What would you do to make the Antenna system on this vessel as good as possible, across the LF/MF/HF Spectrum?
If you get the answer right, you are smarter than 90% of the Marine Electronics Techs now working in the field..... Just Say'en....