Jacking up the mast is doable. Pulling the mast is safer and offers other 
benefits I'll explain later. I know someone who had to replace the deck plate 
for his deck stepped mast and jacked the mast up using a car jack under the 
boom gooseneck fitting. He managed to loosen the shrouds, headstay and backstay 
evenly as he jacked up the entire mast, remove the old plate, install the new 
and lower it back down. 

You'll have to carefully plan this out. Here's how I'd approach it. 
If your mast is keel stepped, you'll want to raise it several inches and keep 
it steady, while you get at the old step. You should have two inches of travel 
with your existing turnbuckles, so check them first, lube them with T-9. I 
would add a 2" toggle to each shroud and stay, so 8) 2" toggles or shackles 
that go between the turnbuckle and the deck fitting. The mast probably weighs 
300 to 400 pounds with spreaders and rigging so good quality come-along or car 
jack can be used to lift it, however, you'll want something more reliable to 
secure it before working underneath it. Solid steel channel or something 
similar will be needed to secure it. And this rig will need to be so secure you 
can kick it and it won't move. Place heavy wood pieces to spread the load on 
deck behind the mast collar and a good jack under the gooseneck, jack up slowly 
a little at a time loosening the turnbuckles evenly around the boat. You may 
need to tie the jack to the mast to keep it aligned. You may need to tie or 
bolt the jack to the gooseneck fitting. Once you get the whole rig raised 4" or 
so, you need to replace the jack with a piece of solid steel channel and lower 
the rig onto it, that's your safety. Snug up all the shrouds and stays and it 
should be safe to work under. Not with my hands. Can you make a rig like that? 

Safer to hire the sign crane or the travelift crane and pull the mast. Should 
cost $200 out and $200 to put back in. Once out, you can easily check the whole 
rig, all the swages, all the fittings, halyard sheaves, replace the electrical 
wiring, (<10 wires, so do it using marine grade stuff), new bulbs, windex, soak 
all your halyards in Tide with Downy Fabric Softener, lube the sheeves, etc. 
And build a solid mast step with the cabin clear of obstructions. 


Chuck 
Resolute 
1990 C&C 34R 
Atlantic City, NJ 
----- Original Message -----
From: "Joe at Zialater" <j...@zialater.com> 
To: cnc-list@cnc-list.com 
Sent: Monday, December 17, 2012 6:24:25 PM 
Subject: Stus-List 30 Mk1 Mast step repair 




Howdy Listers, 



I am new to the list and the new owner of a 1975 30 Mk 1. Overall she is in 
decent shape with a fwc A4 that runs well. Aside from needing major 
cleaning/polishing and lots of minor fixit stuff, she has one big ugly problem, 
the mast step is sagging and needs to be rebuilt. I have read up on the repair 
at cncphotoalbum and it looks doable for a winter project. 



I wonder, has anyone tried this repair without removing the mast completely? 
Perhaps jacking the mast up a few inches with some kind of rig from inside the 
cabin or from on deck? Any idea what the mast with rigging would weigh? 



It would save me the hassle of removing the mast and rigging, not to mention 
the crane fee. She is on the hard now. 





Cheers, 



Joe 

1975 30 Mk 1 

Mayo, MD 
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