just got a new boat, too me, . came with a lowrance pilot ser# 0-39-H-08140. can't find any info on it. anybody herd of them? and there function,. also says interphase on it, . also has dc 500 ser#0-51-f-01872.
Kind of hard to tell with that picture cause the wheel is covering most of it.
But I think you have the Pilot loran.
Here is the manual. (a bit slow loading)