Buccaneer 28 Trimaran plans.

Yeah thanks Buzz, you da Man !

 

No it's not. Those mod lines are just some possibilities that have been doodled in. The designed transom is is perfectly fine as it is, and is a great place to hang the outboard on a standard lifting bracket.

 

Thanks Pat,
I remember seeing the Toronto boat in a brochure with the outboard bracket. This is an elegant design. I can see a rig upgrade and maybe stitch and glue chines. I wonder why there are so few examples still sailing. It was not that complicated a build and an attractive boat that fulfills the need for a daysailer/weekender and I could even see an adventurer heading out into the Bahamas...

 

The waterline width narrows down significantly at the transom compared to modern designs. How does this effect performance especially with regards to hobbyhorsing?

 

Never had a problem with "Hobby Horsing" on my B28.
I think "hobby horsing" is more a function of too much flare in the bows, a function of most of Pivers designs and Wharrams early "Classical" Cats.

 

I had understood from stuff read on here and elsewhere that the phenomenon of hobby-horsing was due to too much rocker, especially aft, and that modern designs reduced the rocker aft to reduce the propensity for this...


DISCLAIMER: I am not a naval architect or hydrodynamic engineer, this is hearsay and not to be taken too seriously.

 

Buzz.
It's complicated.
It's a matter of trade off between several conflicting forces and design features.
These include hull rocker, bow flare, aft end displacement, angle of runout,
prismatic coefficient, and the fore and aft rotary inertia of the mast and rigging, amongst others.
A good designer is able to figure out all these things and produce a total cohesive system which damps out excessive pitching. Crowther was good at this, especially with his use of bow bulbs, first used by him on the ocean racing Catamaran "Bagatelle".
I remember I was suitably impressed by how smooth and silky was the motion of the Kraken 40 "Ringo", in the rough and choppy seas crossing the Gulf Stream in the 1969 Bermuda race, even though that was before the use of bow bulbs. Lock was very good at getting it right. Even he boobed sometimes, but always used the lesson to improve.

 

Actually oldsailor, yes it is. The boat was extended 1.5 ft from design.

 

S.S. Are you saying that your B28 is actually 29.5ft long.
If so you may as well call it a Buc 30.

 

Thanks buzzman for up loading the plans, it was interest just to look at them, and remind my self of the trimaran.

 

This thread is rapidly getting out of date.
Has anyone got a result yet and produced a usable set of full size plans. :?:

 

The pdf's I got from Seastallion are fine when someone who knows what they are doing prints them.

 

Full plans

I don't think I have a complete set, but what I have reproduced fine at full scale.
I also think some extra volume aft would improve the 24, the 28 and the 33- and most modern designs have gone that way. I think Crowther would have also, as his designs and all tris were still evolving when the Bucs were developed. Of course, there are always trade outs, a wider/flatter/overhanging transom can slam in the wrong conditions, and be horribly noisy at anchor with waves coming from the stern. Don't ask how I know
B

 

Yes I know the PDFS we got from Seastallion are fine, and we are very grateful for them, but has anyone created a complete set of full size sheets of plans from them. It's important to know.
I will shortly post up on this thread the building instructions and materials list which can be printed down size A4 on your computer/printer.
But they will be of little use without the full size plan sheets.

 

plans

Yes I have printed off a full set of plans, with full size templates.

One set from a common print shop were out of wack. A second set printed by an architectural office were spot on.
Both used the same set of pdf's from a memory stick.
Are the building instructions and materials lists the ones I supplied ?
Here is the ones I have, sorry all one file.