David M (or others) - Can you elaborate a bit more, on how much difference you feel there would be, between an 18" and 24" dome.
I would be getting a Raymarine
dome, as I have a C80 plotter. It (unlike the widescreen C series) does not support their new digital or HD domes. Only the 2Kw 18" or 4Kw 24" analog domes.
Of course, the larger dome is 4KW, whereas the smaller is 2KW, so fee free to comment on power as well.
I would be using it for coastal cruising (normally within a few miles of shore) in a Fog
prone area (Nova Scotia).
I am primarily concerned with identifying / avoiding others ships and rocks / islands, rather than weather
I have never used radar before, so I appreciate input from thise with experience!