Slingshot 16 Trimaran Plans
This is an instant download for full plans. For free study plans, click HERE.
- Top Speed (typical) = 14 mph
- # Of Occupants = One (Note: A 2-seater version is in the works. Please contact me by email for details at email@example.com )
- Length Overall = 15â 10â
- Beam Overall = 12â (or 7â folded. For details about folding options, please email me.)
- Main Hull Beam = 24â
- Length Of Amas (outriggers / floats) = 14â
- Weight Of Main Hull (built with 3mm lauan ply) = 75 lbs (34 kg)
- Weight Fully Rigged = approx. 175 lbs
- Draft Fully Loaded = 5â max
- Sail Area = 85 sq ft to 128 sq ft, depending on choice of sail rig.
- Sail Rig Type = leg oâ mutton with boom (or full sloop rig).
- Mast = aluminum tubing, unstayed (or optionally stayed rig).
- And you get FREE EMAIL SUPPORT for your build â no matter how long it takes!
Slingshot 16 Trimaran With Optional 118 Sq. Ft. Radial Batten Sail
If youâre looking for a quick little boat thatâs comfortable, nimble, ultra-stable, super-fast to rig, gets you sailing in just 10 minutes, and will run circles around most other sailboats - you have just found it!
The âSlingshot 16â trimaran will hit 14 mph, points higher than 45 degrees, and turns on a dime â all while you sit comfortably in your seat, facing forward, with both hands free thanks to foot-pedal steering. She can be launched in 4â of water and sailed away - upwind - in just 6â.
Many of the Slingshot 16âs benefits over âsimplerâ hull designs are the result of its hydrodynamically superior 5-panel hull with a flat-bottom center panel, which planes much more easily than 3- or 4-panel hulls.
Lauraâs Boat - The original inspiration for Slingshot 16
Over the years, quite a few of the folks who have visited my web site ( www.DIY-Tris.com) have requested plans, and most of the requests have been for the small tri known as âLauraâs Boat,â which I originally built for my dear wife back in 2010.
The âSlingshot 16â I now offer plans for is based on Lauraâs Boat, but it has 2â more freeboard, a fuller bow, amas that are longer by 2â, and is has been beefed up where it matters to safely carry more sail. In fact, I have had as much as 128 sq ft of sail on it, which is quite a bit for an unstayed mast - i.e., no shrouds. I think 110 sq ft of sail is probably the ideal âmaximumâ for general day-sailing. (Though we sailed the original Lauraâs Boat for years with just an 85 sq ft sail, and Laura still prefers that very simple rig.)
And if you'd like to see just how nimble and quick the Slingshot 16 really is, here's a short video of the Slingshot 16 going 10-13 mph, and another short video demonstrating the joys of hands-free tacking â changing direction a full 180 degrees without touching anything but the steering foot pedals:
All of the improvements made to the Slingshot 16 over the original Laura's Boat add about 10 lbs, but also make for a much sturdier and more seaworthy boat. The 3" splash-guard overhang around the edges of the foredeck make an already-dry boat even drier to sail, and the longer amas enhance both speed and smoothness of ride.
Over the years, I have let other folks take out Lauraâs Boat I when I took out my own 16â boat. Not only did they âget the hang of itâ within the first 15 minutes, but it was all but impossible to get them back out of the boat! Seriously, I had to chase them down (not an easy thing) and tell them we needed to call it a day. They said it was like âa Go-Kart on the water.â
Although I have 4 trimarans ready to sail (two 16-footers, and 19-footer, and a 24-footer), itâs the Slingshot 16 that I always seem to grab when the urge to sail hits me. Although all these little tris are quick, nimble, dry, stable, and a blast to sail, Slingshot 16 just seems to put it all together in the most irresistible way.
NOTE: Both the original Lauraâs Boat (6 years old and going strong as of 2016) and my Slingshot 16 were built from 3mm lauan âdoorskinâ ply costing about $12 a sheet, and from 6mm ply costing about $22 a sheet. Or, you can spend the extra $ for okoume or some other pricey species of plywood. As long as the glue is waterproof, you can use any ply you wish.
Main Hull 2 sheets of 3mm ply, one sheet of 6mm ply (decks).
Amas (outriggers): 2 sheets of 3mm ply, one sheet of 6mm ply (tops).
- An extremely detailed construction manual including more than 280 photos detailing the complete building process, with over 70,000 words of explanatory text by Frank Smoot.
- A separate drawings manual with dozens of superbly detailed, multicolor CAD drawings by Jerome Delaunay showing every construction detail with crystal clarity.
- PLUS - I am always here at firstname.lastname@example.org to provide whatever email support you may need!