Re: Conversion to Internal Halyards
If the boat's afloat, and you're comfortable in a bosuns chair, it's actually not that hard to do with the mast up.. in fact it's easier to feed the messenger line down the length of the mast with it vertical. Cut the exit slots, go up and remove the 'cross the sheaves' halyard and feed a messenger line with a short length of bicycle chain on the end over the first sheave and down the mast. Have someone with a flashlight and a narrow wire hook watching for it to arrive below, fish it out the new slot and the run the real halyard through. Thread the halyard through the exit slot cover plate or box, whichever you chose, and you're done!
One of the neat things is that now, since you had 2 halyards and 4 sheaves, you've got spare sheaves for a second halyard for both the headsail and main if you want.
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)