I'm thinking Paceship PY23 or ODay 23 or some such.. the coamings don't look exactly right, but I don't think it's much bigger than that.
Looks like Ray Hunt's work, whoever built it...
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)