Can anyone help identify these depth and speed transducers? I bought the boat ('85 Pearson 27) and there were no instruments, just a plastic panel covering where they used to be and these transducers.
I am hauling the boat out soon to do some other maintenance and am thinking of replacing these with a Raymarine ST40 kit. Are transducers pretty standard sizes? Will I be able to just unscrew these and install the new ones in the same holes?