Good morning.
This post is aptly named
Duck !
Jumping Jack Grant was tired of blocking the foremast yards so decided to fit the driver boom.
The boom is attached to Mizzen mast with Parral beads :
View attachment 330859
Here lies the problem! The Mizzen mast contrary to Mantua instructions does not have a rubbing strake. Mantua does not have parrals so the jaws fit higher up the mast. Thus my boom is a little low. Hence the “
Duck” Grants Victory crew need to watch out here.
There are two lift lines running from the aft of the boom through 5mm blocks below the cap (Blue arrows) down to 5mm double sheave blocks 40mm below the top (blue circles). The tackle runs through a block on the channel.(red arrows)
View attachment 330858
View attachment 330864
They are tied off to a circular fife rail on the mast......oops no circular fife rail on Grants Victory. When I prepped the Mizzen I was using Mantua plans. It is unbelievable how basic the Mantua model is. Until I make a plan I have wrapped the end around the belay pin rack.
View attachment 330856
Blocks fitted to channel with eyelet and hook.
View attachment 330863
The driver boom sheets are rigged to an iron horse attached to the transom knees with a hook and block and another 5mm double sheave block through the comb.
View attachment 330857
Not tied off.
There are a double set of horses running
![Rolling on the Floor ROTF ROTF](/sosforums/styles/default/xenforo/smilies/emojione/roflmao.png)
from arse end of boom to the comb seen above.
The Driver boom-
View attachment 330862
It adds another 140mm to the length of the ship.
Cheers Grant