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HMS Snake Gaff boom questions

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This is a first time post to the site asking for help. I am two years into a build of HMS snake and have run into problems with the driver gaff boom. I have now spent many hours on the Internet trying to resolve the problem but have so far failed. The excellent build logs which I have used extensively have been unable to help me. Similarly Petterson's book doesn't answer my questions.


From the enclosed photographs you can see a larger red circle area. It shows a halliard belaying to the belaying pin 19 on the starboard side. I cannot for the life of me understand what is happening in the area shown by dotted lines extending down towards deck level. The plans do not show any eyelets at this point so any clarification on this would be very helpful. It is also not clear what is happening where the Gaff boom meets the mast.


A line is shown going to belaying pin 20 but it not clear whether this is from the throat halliard ( I think it should be ) or the boom topping halliard ( there needs to be one for this) So which is which. Is there one “missing” from the plans?


Additionally I cannot understand the diagram of the second image. Parts list refers to a “Rigging Truck” but I can find reference to this anywhere. What is it for. Where does the thicker rigging line shown start and finish?


Any help with these issues would be gratefully appreciated .

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Doh! Just found the answers to the second part of my query. Staring me in the face on the plans!
But still need help with the Gaff boom.
 
There were seven ships named HMS Snake. Is yours the 18 gun sloop of 1797? Are you asking about the spanker gaff or the driver boom? There are explanations and drawings of the spanker gaff and driver boom on pages 16-18 of James Lees' The Masting and Rigging of English Ships of War. He describes the rigging of the parrels, topping lift/peak halyards, vangs, pendants, falls, and throat halyard rigging on pages 110-114. Too much to copy here for copyrighted materials, but I think a partial page of the boom is OK. If you need the spanker gaff instead, give a shout.
Allan
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Thanks Allan for your quick response. 18 HMS Snakes who knew! Yes this is late 1700 ship rigged sloop from Caldercraft with 18 guns.
My question is related more to the halliyards than the actual booms, the plans are somewhat confusing to my eye (not the first time I've read read that) Where does the one that is labelled as going to belaying pin 19 originate from (its not clear to me but my best guess is the throat halliard supporting the driver gaff boom) any idea what the dotted lines at the lower end refer to ?
 
any idea what the dotted lines at the lower end refer to ?
They are inboard of the bulwarks.

If you want more details the Lees book has some. I have never head of a driver gaff boom but nothing new there :) . There may be such a thing but usually there is the driver boom down low and the spanker gaff up high. Which one are you looking for? Keep in mind there were often variations from vessel to vessel but up to 1818. Based on Lees' description, for a standard set up the gaff throat halyards used an eye bolt set into the jaws of the gaff on the upper side. A single block on small ships like Snake was hooked to the eyebolt and a fall rove between this block and one hanging from the mast head on a strop, the block coming between the trestle trees on the aft side. The fall led down the starboard side of the mast to bitts/belaying pins on the starboard side. There is no mention of blocks like the one labeled K down low. but that does not mean it was never set up that way. Maybe Caldercraft found drawings more specific to Snake. Rigging seems to be a never-ending area of variations.

Allan
 
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