In p249 this can be seen more clearly the way the tackle operates, the rope belaying under the end of the cavil rail and to pin no2 on the cavil rail, the book Sailing Trawlers is a wealth of information, detailing down to the last thole pin what each was for. Photo p250 is just another shot of the same rig from outside of the hull, this also shows the shroud steady bars, which I have located above the seizing of the deadeyes, on further viewing of the book these are incorrect and should actually be just resting on the deadeyes themselves, so another minor alteration to be made.