logo Waters Edge Insignia Drawing courtesy of Philippine Home Boatbuilders Yacht Club

LATEST NEWS on the new 17' build-it-yourself trimaran

LATEST POSTINGS ARE ON TOP — scroll down to see early modelling and start of build
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W17 Main hullPosted October 30, 2011

Weighing your hull…
For all multihulls, it's particularly important to keep a track of weights.
Here's a simple little frame to transfer end weight to a bathroom scale at the bow. Good to first take your scale to the local post office or drug store and put either yourself or various packages on both scales to see how yours compares. Take a note of the differences in 2 or 3 weight ranges to make adjustments.

The front end of this W17 weighed 35 kgs.
It's important that the boat maintains the same horizontal posture when weighing both ends separately, so first set the boat up with wood blocks at both ends that equal the depth of your scale—about 60 mm in this case. Then remove one and replace it with the scale. Then replace the block and do the same for the other end for an accurate total after deducting the weight of the wood frame and making any adjustment for scale error. (With this procedure, it's not necessary to measure the weight at the very end of the boat.) To make sure the scale is carrying the load on its four feet and not on the underbody frame, use a flat piece of ply or wood as shown.

Also see article on Weight Control

W17 Main hullPosted October 23, 2011

A W17 main hull is finished externally and builder shares tips.
See article Main Hull Part 2 on PAINTING

W17 Main hull

Want to try squeegee painting?

W17 Main hull Meanwhile - more progress is made with a composite W17C overseas.

W17 Main hull

Posted September 20, 2011

W17 Main hull

Here, the designer works on a W17 main hull.

W17 Main hull

And a finished Main Hull exterior…

Many details and photos are presented in a detailed article on Main Hull Assembly.
Here's the link to Main Hull Part 1

W17CPosted August 18, 2011

Now the first W17C is taking shape!

One interesting aspect of the W17 shape and design structure is that it lends itself to other flat-panel materials. So when recently contracted by W17 client #41 to build a W17, third-generation boatbuilder Reg Hyde of Subic Bay in the Philippines offered to build with vacuum-bagged composite panels, initially laid up flat on a table.
Although the shell thickness is greater than with plywood, the end result should certainly produce a lighter boat. Rather than redesign the complete beams, it appears that Reg has chosen to maintain the latest inner wood structure and then replace the exterior skin of ply and glass, with composite panel material of equivalent strength.
It will be very interesting to see how this somewhat experimental W17C works out, as this project is being undertaken entirely by pro-builder Reg without specific input from the designer beyond the basic plans and manual. Owner Bill (originally from San Diego, USA) is delighted that he'll not have to be concerned about termites in future ;-)
Here are some progress pics showing the main hull. Frames and bulkheads are also of composite paneling—all taped in place. More details will be shared as and when available.




Ex Aussie Reg Hyde seemingly runs quite a busy shop and makes an important contribution to the local economy by providing work and unique experience for a good number of Filipinos. Good for Reg and family! Incidentally, boat owner Bill who now lives part-time in the Philippines, also helps locals through aids to better education. 'Hats off' to both!

Ed Note: Should anyone else be planning to build in composite, it is recommended to first contact the designer as a thicker shell and lighter weight might benefit from small design tweaks.
amaPosted June 29, 2011
Here's an ama using the latest recommendation of end-grain balsa under the aka mount. Not normally one to recommend end-grain balsa for decks, this is one place that water is unlikely to reach as it's all permanently bonded all round in epoxy.
Its light weight and great end-grain compression strength make it ideal for this application.
Also note the great ease and advantage to tipping the slim amas on their sides to seal their interiors. Epoxy coat 'downhand' whenever possible and leave off the center deck support till the job is done.
Then there is only the deck to add and deckplates to install.

See article on Positioning Deckplates.

vakaPosted June 21, 2011

This W17 makes progress. Here is the main hull…and note the presheathed ply for the amas, off to the side.

Plus the framing of an ama and then all 3 hulls together. This progress or its equal is enough to qualify for the free mast plans.

Vaka and Amas

vakaPosted June 7, 2011

The main hull (vaka) of another W17 nears completion in the Philippines.

Build activity is also picking up in Australia where a couple of the Witt Design kits are being assembled.

More photos coming…


W17 loadedPosted May 4, 2011

On its way back home from Boracay, PH, a W17 heads out to sea with full load of camping gear for the 200 mile trip.

W17 beached

Some nights were spent hauled up on the beach, while others took advantage of quiet water and shallow draft.

W17 loaded

W17Posted March 23, 2011

W17 BeamsOne of the most distinguishing features of the W17, are its raised beams that give good wave clearance. Although made of plywood-covered timber, they are light and strong, but to achieve that they probably become the most complex part of the boat to build. But if you go to the Construction Tips section, there's a quick 'step-by-step' presented that will help simplify the process.

One complete set of beams

Go to: Making the Outer Beams

Hobie FleetPosted March 3, 2010

The W17 takes on the demanding
2011 Hobie Challenge Course
 —300 nm of open water sailing…

Read more…

Posted February 13, 2011 Main Sheet track

And here's the curved mainsheet track that the plans call for.

Makes for efficient sheeting at all required angles.

Go to page 1, 2, 3, 4, 5, 6, 7

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