Re: looking for past or present owners of 1970 through 73 cal 27s
This is a new signet (but old style) in Md
Brand New Signet Marine SL172 Depth Sounder Signetmarine Depthsounder | eBay
My mistake, the DS transducers are not red, the speed sensors have red screwcaps. I don't expect you'll want that one (costs more than the boat and much cheaper ones are available now even new) but the pics might help.
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)