Big Horn Solo Canoe

SOLO TRIPPING IN A VERY RESPONSIVE PACKAGE

Big Horn Bow w

Right up front, I’m going to give a full tip o’ the cap to John Winters, Canadian boat designer, for the inspiration to design this particular canoe. John’s Osprey II S&G design is a beautiful example of a designer bringing his enormous, gifted skills to the worktable. I wanted to draw a solo, tripping style canoe for 4mm marine plywood construction, so I took a long look at the Osprey to see if there was anything I could do differently with the form.

Note: At the end of this article, there is a report from a builder and the results of a committed journey with the Big Horn in the Boundary Waters Canoe Area. Please continue reading to discover a first-hand report as to how the boat behaves in the real world. From a designer’s perspective, it is incredibly satisfying to have independent verification of all the hours that go into the design of a boat like this one.

In Winters’ design, there is a very nice, tumblehome chine along the shear to give additional paddle stroke clearance. I have built boats before that used a similar tumblehome panel and it turns out that they can give the builder some interesting problems when it comes to constructing the hull.

This tumblehome chine is very slender in width, which requires the builder to have a reasonable set of skills to wire it in place prior to filleting or they will end-up with a potentially wavy hull section that just won’t go away short of doing it over. Since I was looking to draw the Bighorn for easier construction for the average guy, I decided to drop the tumblehome panel and instead raise the outer hull panel to maintain freeboard. The result is a six panel hull that is easy to build and nice looking.

Specifications
Length – 15′
Width – 30″
Draft @ 280 lbs. – 3.8″
Weight (estimated) – 42 lbs. (Actual weight 38 lbs.)
Rocker-bow – 2.3″
Rocker-stern – 1.8″

 

Big Horn Aft wThe hull shape is asymmetric in form with the widest point (and it’s center of buoyancy) just aft of the hulls’ midpoint. The hull also has decidedly enhanced rocker fore and aft when compared to traditional canoes of this size. These two design features give the boat very solid, straight-line tracking, as well as wonderful response to turning stroke input from the paddler.

At full, 350-lb. displacement load, the Bighorn has just less than 8” of freeboard amidships. I don’t see this kind of load in this boat unless the owner is going out for a very long solo trip and needs to carry a lot of gear. More likely, you’ll be seeing an all-up, ready for trouble, load of around 290-300 pounds, depending on the weight of the paddler. I figure this boat can be built at right around 42 pounds, providing the guy with the resin doesn’t get too generous with the glue.

Big Horn Above w

The seat setup in the renderings illustrates my take on an integrated unit recognizing the typical canoeists needs when out paddling. There’s a comfortable, sculptural sitting area much like the tractor-style seats one sees on the Wenonah canoes. It is coupled with an integrated pocket on one side for camera/binocular/etc. and on the other side… a circular, net bottomed opening to hold the beverage of your choice. (Ever had a can of coke tip over in your canoe while paddling because there was nowhere secure to hold it? Makes for a fun clean-up session, doesn’t it?)

If you don’t care for the integrated seating system, you can always use the traditional, woven caned seat, a simple, stretched canvas platform or a woven-webbing seat. For that matter, you could always buy a tractor seat from Wenonah.

Outside the typical description of a solo canoe introduction, I decided to include a little extra teaser for those so inclined. I drew a set of outriggers specifically for this boat.

Big Horn with Small Amas w

They aren’t fancy in appearance, but they are very simple to build, easy to use and they provide enormous stability to the boat if you’d like to fish, shoot pictures, take a nap, shoot birds, etc. If you were so inclined, they can also be used with a modest sail rig to allow the Bighorn to be sailed like a trimaran, though don’t be expecting these amas, or the suggested sail rig size of 30 sq. ft., to provide much more than a pleasant sailing experience. Still, it could be fun on the right body of water.

Water Test Report by Stan Heeres

Sunrise-on-the-Boundary-Waters

Build process documented along with the first trips out on the Boundary Waters Canoe Area

The complete web record of the Heres build is currently not available. I’ll search for it and locate what I can of the document.

 

Stan Heeres’ recent comments as follows:

“I purchased plans from you for the Big horn a few years ago. My son and I built the canoe and have since been on 2 Boundary Waters trips with it.
I promised you that I would detail the building process. I did and am just finishing the presentation up and will post it soon.
I have also built the John Winters Osprey (both the strip version and the plywood version). Here are a few details”

Strip Osprey

Lightest(34 lbs), receives the most comments by a wide margin (it looks really good), slowest of the 3 and hardest to keep in a straight line of the 3 at speed.

Plywood Osprey

2nd lightest lightest(36 lbs), very functional but does not get the comments, 2nd fastest and stays in a good straight line.

Big Horn

Heaviest(38 lbs), glides like a dream, Kevin, who uses it, will effortlessly pull away from the other canoes, tracks straight as an arrow.

Cherokee-Morning

 

It’s pretty clear that I am proud of the boat and how it has turned-out for an experienced canoe builder. Being able to say that one of my boats can effortlessly pull away from a design created by a known master in the trade is exciting. That it also has terrific tracking manners when loaded and out on serious water, really makes all the design considerations worthwhile. Stan, thanks so much for the really kind words on the boat. I’m really looking forward to Kevin’s report.

Strider

Dual Mirage Drive powered, two person launch

Duckworks - Strider

Some time back, I encountered an ex-pat American, now living in Melbourne, Australia, by the name of Mack Horton. Mack wanted to build a two-person boat for cruising the harbor and waterways of his hometown, Melbourne. He was looking to propel his boat with a twin setup of the wonderfully innovative Hobie Mirage drive designed by Greg Ketterman. I really liked that idea as I had already done a few different boats that were Mirage capable, but they were all solo boats. This design concept opened a new door for me, as it would allow me work out the balance and weight issues for a twin drive and once built, I could also discover how much more speed potential might be available beyond a solo drive.

I had a hull in mind from my portfolio that would need to be “massaged” just a bit to get the form stability and low-speed performance for which I was looking. The boat had to be able to handle potentially large boat wakes and small chop of the open regions of the harbor and still be easily driven by human leg power.
Duckworks - Strider
I was looking to achieve some of the lines of a classic launch with reasonably low windage and yet, enough freeboard to ward off the possible conditions. Surprisingly, the hull form came directly from a previous boat shown  at the Duckworks Magazine, the A18, canoe/trimaran.
The A18 hull had a very strong bias towards higher speed potential with only a nod to being driven at slower speeds, so a slimming process had to take place in the forward and aft sections of the hull. Likewise, the beam of the hull was pulled out some to give the boat a solid degree of form stability so it could ride the wakes of passing freighters in the harbor when taken abeam.
I sent the plans off to Mack and he promptly got to work on the boat at his favorite spot for boatbuilding, the Melbourne Wooden Boat Center

Cut to the Chase

Mack has now finished the boat and has had it out on many outings. He’s learning a lot about boat trim and optimal placement of the heavier pedaler for best performance and handling. Besides the still photos showing the boat on the water, Mack has also provided a pair of video clips showing the boat underway.

 

 

 

Clearly, Mack’s Strider, Ripple, is showing itself to be a pretty fast boat when being propelled by two average people. This is being done from a semi-reclining position with hands free, while enjoying the sights in the Melbourne harbor and adjacent waterways. Here is a link to an article I wrote for Duckworks Magazine that shows the GPS track and speed data achieved by the Strider design: http://duckworksmagazine.com/08/reports/feb-mar/index.htm  This is pretty heady stuff for a human-powered vessel intended for casual cruising and not blistering speed.

Mack reports that one of the ubiquitous dinner cruise boats, that you see in just about every harbor of the world these days, pulled alongside and challenged both he and his friend, Justine, to a little race. Off they went with Ripple easily leaving the cruise boat in the dust. Let’s overlook the fact that powered cruise vessels of this type have strict wake generating spped limitations…
Later, as shown in the video clip, Mack and Justine took-on a fully crewed Dragon boat. Dragon boats measure 40 feet in length, 4 feet in width and carry 20 paddlers, 1 drummer, and 1 steers person. On average, these boats weigh 500 pounds. Understandably, Ripple could not quite match the speed of the Dragon boat with twice the waterline length and 20 paddlers. Perhaps there could be a triple version of the Strider in the future? One that is longer, more slender and much, much faster.
Duckworks - StriderThe Strider design calls for a very straight forward stitch and glue build method in 4mm marine plywood with glass/epoxy laminates inside and out. The twin Mirage trunks sit cleanly in the hull allowing for a comfortable seating arrangement for two persons and their day pedaling “stuff” such as binoculars, cameras, food, drink, blankets, etc.
In the right environment, the boat could easily be used for overnight camping as well, as there is plenty of displacement capacity for more gear, should the owners wish to use their boat in that fashion.
I expect to see these boats being equipped with Bimini covers and small forward dodgers. The interior hull sides will probably be lined with neat rows of mesh bags to storage of the small things that make for a really nice time on the water, such as: sunscreen, lip balm, mosquito repellant, drinking water, snacks, camera, VHF radio, GPS, etc.
Maybe you have a cabin/cottage on a lake where the general store is across the water, but a short distance, but to walk, it would take an hour to get there. Strider is an excellent, human powered boat for a trip like that. An enterprising person could equip her with an all-weather set of side panels to mount under the Bimini edges, allowing trips to the market in any conditions, short of a full-on gale. (Check out the last video clip above)
The boat is cartoppable, much like a large canoe would be, but I’d advise the person doing the loading be reasonably fit and/or have a really sweet loading system, or technique, as the boat does weigh right around 70 pounds without the Mirage drives in place.
Mack has kindly supplied some very interesting speed marks for the boat that were confirmed with a Garmin Edge 305 GPS with wireless heart rate and cadence monitors.
Highest speed attained with two pedalers…… 7.2 knots
Highest speed with one pedaler………………… 5.7 knots
Average speed for one hour w/ two………….. 4.8 knots
Average speed for two hours w/ one…………. 3.9 knots
Turning circle for the Strider is 33’

These figures run pretty much spot on with my estimations. They also indicate that the hull has gotten to its, “not gonna go there” speed limit and will be pushing uphill on its bow wave from that point on.

Duckworks - Strider

While underway in Strider #1, “Ripple”, it is not unusual to be hailed from dockside and beasked, “What is it?”, “How does it work?”, “How much does it cost?”, and his favorite… “It looks like it has an engine!”

Response has been very positive from athletes, because it’s fast… and from non-water type folks because Strider is stable, comfortable, dry and “not scary”.

One of the reasons that Strider is so stable is due to the recreationally respectful beam of the hull. I’m working on a much faster version of the Strider design concept, which should pretty much take the Mirage drive out to its theoretical top speed limit.

All in all, Strider is a really fun and stable human powered vessel designed for recreational pursuits by two people. It has the classic look and feel of a traditional launch to it while underway and can easily power-up to get out of the way of oncoming traffic in a crowded harbor, or lake setting.

Chris Ostlind

Lunada Design