Nice bunch of nautical knives! I hear some of those sailors were scrimshanders too.
I grabbed this knife for the Bill Feeney scrimshaw art. It's a 1980s, Parker or Frost, Japanese white bone knife. First Yachtsman-type knife I've owned.
I like this design where the bail also serves as a lock for the marlin spike. You hold it with your thumb and that spike isn't going anywhere when you have to dig into a knot. Really strong lock-up! It has a half-stop and you can lock it into this position as well. It's more of a display piece though with it's mirror-polished "Collector's Series" blade (that is not-at-all smooth when opening or closing). The spike is smooth and snappy.
I'm NOT a lineman for the county, and I DON'T ride the main road, searchin' in the sun for another overload. But I've heard that some linesmen and electricians like knives with a shackle and a locking screwdriver blade.