Hi Bud.

I am about to hoist my WS 42 up on dry land, and I have to order a crane big enough for this job.

I live in the middle of nowhere in south of Thailand, and big 25 ton cranes are hours by car away from where I live.

I can however get a 12 ton crane only one hour away, and the cost is less than 1/3 of a 25 ton.

Because of this, I want to find out the correct weight of my boat.

As I have told you before, termites have eaten all the wood in my boat, include the lower part of the mast. I have now stripped the boat totally inside and outside, and there is only the hull and deck left. No mast or rigging, no wires, no motor, no tanks, nothing but hull and deck.

All the plywood in the deck is also attacked, but I will not do anything to that now. Later I will cut out the inner laminate and replace the plywood, but I will let the termites eat as most as possible before I start that job. I assume that will make it easier for me to separate the inner and outer laminate.

The plywood in the deck is probably soaking wet, since I have removed all the crews and bolts. Termites come out of every hole that is made in the plywood, so my guess is that most of it is already converted to a consistency like wet crispy bread.

The best way I can find out the exactly weight of the boat, is to find out the volume of the water she ousts. If there is a line drawing of the hull available, I can calculate the weight very correct by means of a computer.

A line drawing of the hull will also make it easier for me to design the interior layout before I start building her up again.

Is there a line drawing of the hull available?

If not, do you know the weight?

I also would like to know the weight centre of the boat to keep her horizontal when I lift her. That is much harder to calculate from the line drawings.

Do you know the weight centre?

In the construction manual under “Standard Equipment List”, I read about “Six bronze-framed fixed windows”.

Are they still available, and what is the cost of these? Mine are made of wood and totally damaged.

Ole.

Robert:  Those are great images of the W42 -- I'd like to make a copy on the WOA Picasa site as a historical record and then link from the W42 page. 

What do you think?

Jay

The designed displacement is 32,000 lbs.  I have seen the actual weight go up to 38,000 lbs. or more.  I would not recommend trying to use a crane rated for anything less than 32,000 lbs., despite there no being the mast, boom, and rigging aboard.  Too risky.

I have some pictures of a crane toppling over on top of a boat if you want to see them.  

To Norm and Bud.

Thank you for advices. There is not much "arm" needed, but I still think I go for a 25ton crane. Better safe than sorry. I don’t need any photos Bud, I am scared enough already. J

Ole

Ole Magnus Andersen wrote:

Robert Sutton wrote:

Ole,

Having done this, I thought I would chime in. But I always defer to Bud ;-).

Design displacement of the W42 is 32,000 lbs. A 12 ton crane would be too small.

I have scans of the original line drawings up here

https://picasaweb.google.com/westsail42ketch/BuildingAWestsail42DesignAndDrawings#

If you want higher resolution scans, I can email you some.

I also have CAD files (autocad DWG or DXF) I put together based on the original scans I can send if you are interested.

Let me know.

 

-rob

Robert.

I will be very happy if you send me these original line drawings named FILE0001 to 6, in high resolution. The CAD file of the hull will also be appreciated. The DWG  suffix will be fine, since this can be imported to “Rhino”, the software that will do the calculation of the water the boat oats.

A fully equipped boat weights 32,000 lbs (14,5 ton), but mine is stripped down to a bare hull, and is much lighter. A rough calculation of the water she outs today says he weights 10 ton, but I want it more correct before I contact the crane guys.

Ole.