After some confirmation on mast fittings. Got most of these dimensions from previous threads and/or the rules.

Mast from deck to bottom of upper black band 6300mm (I have 100mm from sheerline to deck)

Upper edge of lower black band 580mm above deck (680mm above sheerline)

Rest of these measurements are from Upper edge of lower black band.

Upper black band, lower edge 5720mm

Hounds at 4300mm

Spinnaker sheave box at 4220mm

Spreaders at 2350mm

Just missing 2 things:

1) If  I’m using  this 2:1 purchase system at top of fore-stay/jib halyard where do you suggest I put anchor point and sheave box to get the 4170mm?

2) Loose footed main, how does the lower black band fix my goose-neck/boom position? Not sure how to interpret rule 7Cii
7 C
(ii) Lower band. The top of the boom in way of the mast or the tack of the mainsail if this lies below the centreline of the boom, shall be not lower than the upper edge of the lower band, and this upper edge shall be not less than 630mm or more than 730mm above the sheerline in way of the aft edge of the mast when the boat is rigged as it is raced. The tack, for the purpose of this rule is defined as any point of attachment on the sail or near the junction of the luff and foot. 


Thanks, I’m getting so close to finishing my boat I can taste it now…

John

I know it's pretty John but don't lick it.......

Gooseneck'
1 Lay mast on floor & boom ruffly in position 
 Without drilling any holes put 'loose' gooseneck pin   into boom, offer this to aft face of mast, top of boom should be in line with top of lower band which hopefully you've already marked.
or 2, Simply measure top of your gooseneck when in boom
in relation to top of boom and ditto measurement to top of lower band.

I'm not sure which is simpler? confused I am regards Barry

Jon,

Think you'll find most 2:1 jibs have the dead end at 3965 and bearing surface of sheave at 4060.  This is well below the max, but fits the shape of jib currently most popular.  Your spreaders might be a bit high for current thinking also, 2540 is common, but flexible of course...

Will you be sailing her across the pond to show her off to us?

All good enjoyment when you get her afloat..

Best wishes

GGGGG

OK thanks Barry boom position not affected by loose-footing main. Just align top surface with lower black band.

GGGGG - Thanks, I'll try the 3965mm and 4060mm, Hounds still 70-100mm above that?

Did you mean 2540mm for spreaders, you say i'm already a bit high at 2350mm?

Sailing across the pond? Not sure i'm up to sailing across the duck pond in local park!
Lets see, navigating 3500 miles in an open boat, you've obviously mistaken me for Capt Bligh. Have we sailed together? My wife says the Capt Bligh mistake is easy to make if you've ever crewed for me! ;-)

My interpretation of the rules is that neither the tack of the mainsail nor the top of the boom should come below the top of the bottom black band so you should line up your gooseneck to put the top of the boom at the top of the lower band & make sure the tack of the main doesn't go below it if loose footed

I'm sure the class association could manage a subscription in $$ ;->