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W17 Sailing Trimaran

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For more descriptive information on the W17, CLICK on one of the links below.

Preliminary Design Concept & Development
Intro Part 1—The W17 Design
Intro Part 2—Building the W17
Intro Part 3—Build Manual & Plans

LATEST NEWS on Building the W17

Following many requests, here is what I'll call a:

Study Profile of the W17 Sailing Trimaran

Many sailors are intrigued or already bitten by the multihull bug, but not everyone is ready to put thousands of hours into building, or dollars into buying boats now on the market. So for those seeking to experience the pleasures of sailing flat and fast, getting on a beach cat has commonly been the way to go. But though exciting, they do tend to be very wet, have almost no storage, are often uncomfortable and with a tendency to flip with little warning.

Today, from racing around the globe to the prestigious America's Cup, winning boats are commonly trimarans, so a small trimaran is clearly an attractive alternative way-to-go and the W17 has been designed not only for home construction at relatively low cost, but also to improve significantly on the attributes of a beach cat without many of the disadvantages.

With all my designs, I am personally looking for Overall Performance and by that I mean a blend of attributes that makes my boats a real pleasure to own and sail. First of all, I want them to feel and perform efficiently. I also want them cost effective, comfortable and drier than their competitors and to provide a sailing satisfaction that brings the lucky owners home with undeniable smiles on their faces—and I am confident that the W17 is such a boat.

This boat readily folds to only 7'-3" (2.2 m)—less than most day catamarans and can be trailed on a flat-bed trailer or sat on the sand. She is stable and roomy yet still moves with the ease and fine feel of a thoroughbred. She is designed with a rotating wingmast in mind; one that can be homebuilt with plans available as a free bonus to those who build the W17. And I'd wager that the W17 Plans and Build Manual are more detailed than any previous 17-footer out there on the market! So take a read through the other articles noted on this Study Profile and take a serious thought about giving a small trimaran a try. There is something extremely satisfying about building your own boat as many in the past have learned. But there are not many new designs out there that still use familiar material like plywood that's available almost the world over. Its combination with epoxy and glass now goes a long way to prolonging its life too if used as recommended. With space for 3-4 to daysail or by enjoying some fast sailing for 1-2, this boat will change the way you think about sailing. It's like owning a Maserati for the price of a VW kit car. Enjoy!!


Basic DESIGN DATA:
     Displacement at DWL:     700 lbs
     Buoyancy of Ama:     700 lbs
     Estimated weight:     ±150kg (330 lbs)
     Estimated construction time:     3-400 hrs
     Estimated cost of materials:     $1900-$3900
          depending on source and quality
Designed by: mike waters n.a.
LOA: 5.20 m (17'-1")
LWL: 5.14 m (16'-10")
Beam sailing: 4.2 m (13'-10")
Beam folded: 2.2 m (7'-2")
   
SAIL AREA:       
Main: 12 m² (130 ft²)
Jib:  4 m² (45 ft²)
Total upwind: 16 m² (175 ft²)
Reacher/drifter: 9.9 m² (106 ft²)
Wing Mast: 7.3 m (24 ft)








LIST of PRINCIPAL MATERIALS
Description   Quantity (main items only)
Plywood 4' x 8' (1.22 m x 2.44 m) x 4.5 mm   4 sheets
Plywood 4' x 8' (1.22 m x 2.44 m) x 6 mm   9 sheets
Plywood 4' x 8' (1.22 m x 2.44 m) x 8 mm   3 sheets
Plywood 4' x 8' (1.22 m x 2.44 m) x 3 mm   1.25 sheets
Spruce/Pine/Cedar (stringers)   30 bd-ft (2.5 ft³, 0.07 m³)
Hardwood - mahogany   6 bd-ft (0.5 ft³, 0.01 m³)
Epoxy resin & hardener, fillers   4-6 gallons - depending on sheathing
Fibreglass cloth (6-oz)   40-70 sq-yd - depending on sheathing
Fibreglass - 45/45 Bias and Unidirectional cloth    small quantities
Paint - Varnish to finish  

LIST of PLANS
W17 - 01 SailPlan
W17 - 02 Main Hull (vaka)
W17 - 03 Main Stempiece
W17 - 04 Deck structures
W17 - 05 Amas
W17 - 06 Ama stempiece
W17 - 07 Building Platform
W17 - 08 Daggerboard Case
W17 - 09 Deck Plan
W17 - 10 Aft Beam (aka)
W17 - 11 Forward Beam
W17 - 12 Curved beam ends
W17 - 13 Daggerboard, boom, rudder arrgt. & tiller
W17 - 14 Spade Rudder
W17 - 15 Fwd beam fairings


Manual Sample

Study Profile
CLICK HERE to download your own copy of the Study Profile


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