G'day,
Interesting. Are you sure a 6m hull will support you, your wife, half the beams and solid deck and cruising stuff and still have respectable l/b ratio? Not a deal breaker, but it is better to be a little longer than too short.
I don't like the full headroom on the bridge deck for windage reasons. OK if the sides are removable for sailing. Toilet up there makes good sense, apart from this.
Dinghy ramp and using the dinghy as an auxillary is a great idea, as long as the ramp can handle the waves. Strong hinges and some sort of spring in the supports. Don't forget to tie the dinghy on!
Make the lee hull 40'. Will sail better, be faster, less likely to dig the bow in.
Build contracts are very hard to make equitable. I am starting with less important panels (6m/20' windward hull) for a fixed price ($AUS6,000, half of which is materials), which is probably higher than a straight wages job, but the builder has the table, pump and all the gear. Once that is built, he will give me a quote for the 15m/50' lee hull panels which should also be about 6k, plus or minus anything we learn from the ww hull. He is doing some samples of infusing tow (my tow, his labour and shop). Once we know how that goes, he will give me quotes for the rudder shafts, beam and mast. He is almost as nutty about quick, light and cheap as I am. Lots of great and not so great ideas going back and forth (no charge for this time, which is about 20 hours so far) and plenty of test panels so there won't be any surprises. If your guy has a table and all the gear, does a few samples and will let you watch/help, then there should not be any surprises. If you can do all the prep work (perhaps not for the first panel), and pay him for the action end of the job, you should get something fair for him and low for you. Lots of simple, small jobs and small payments, made on time, help to make the difference between success and failure on boat jobs.
rob
Hi,
A new job and a continuing desire to test out my feelings towards a harryproa have prompted me to try again with a layout for a harry just big enough for me to do extended cruising, with enough bunk space for my wife to accompany me if she likes. There are a couple different ideas in this design that I wanted to pass by the group:
1) The galley is laid out perpendicular to the ww hull. There is basically just a 2'x2' area to stand on. The double bunk is behind you and the galley is in front, and is the same width as the double bunk (4.5').
2) I moved the head out of the ww hull to the cockpit. Before the outrage starts, let me just say that with a hardtop, I felt like it would be feasable to drop a privacy curtain down around the head when it is in use, and it avoid putting a potentially "aromatic" head right under either the galley or bunk in a boat this small.
3) There is a removeable 7'5 wide hard deck which doubles as a dinghy ramp. Having a good dinghy with a powerful (15+hp) engine greatly expands your range when cruising. The proa has no engine; I figure I can either tow it from the dinghy, or perhaps lower the dinghy ramp and just use the engine if I need it. I would like feedback on this idea.
4) No piece is wider than 7.5' when dismounted, as I am still on my "fit it in a shipping container" kick.
5) I have drawn the hulls the minimum length I think they can be. Since the actual hulls have no walking space in them, it would be trivial to just extend them. My back of the envelope calculations imply that it would add about 10 sq ft of panelling to extend the lw hull by 1 foot, and about 15 sq ft to extend the ww hull by 1 ft. So, to extend the lw hull to 38' and ww to 24' would add less than 500 sq ft.
6) My very rough preliminary calcs show about 1100 sq ft of panel as drawn. I am guessing about about 1 lb/sq ft, plus beams and rig, to come in about 1600 lbs. Sailing weight probably about 2000 lbs with a displacement about 3500 lbs for a 1' draft on each hull.
I would like feedback. I have a potential lead on a relatively local builder who might be interested in working with me, so once I have panel drawings done I was going to approach him to see what sort of pricing we can work out.
I am interested on innovative ideas on how to do a build contract on something like this. A builder won't give me a reasonable fixed price, despite the simplicity of because it is so new to them and they can't risk the loss if things don't work out. I don't want to just pay by the hour to have them play around and figure it out. Anybody have any ideas on a compromise? I have been leaning towards trying to get a fixed price on just the lw hull, since it has the fewest pieces and use that as a basis for estimating the rest of the boat.
Thanks all,
- Gardner
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