One problem I’ve had sailing my Seawave is the sail tends to sway ever more violently from side to side when the wind gets too strong. This is not just a problem with the WP disc sail I now use (left); it was the same with the Pacific Action V-Sail I used on my Incept K40 in northwest Australia a few years ago. Unable to transfer the wind energy into forward motion, it instead spills over the sides in a flapping frenzy.
It’s well know these downwind sails (especially smaller ones) have a limit of about 15-20 mph beyond which they flip out. But lazily hooking up the WP to my Seawave’s decklines introduces a lot of slack (left) which may exacerbated the swaying. It was only when trying the similar AirSail and later my WP on my packraft in Scotland (at one point with gusts as strong as Australia) that I realised lashing the sail mounts close to the hull eliminated the swaying. At least on a broader bowed packraft.
Out sailing the Seawave the other day, I belatedly succeeded in tensioning the decklines on the water with some ever versatile SoftTies (right). As you can see left, that worked OK but annoyingly it wasn’t as windy as I’d hoped, and not enough to get the WP in a flap.
I’d forgotten to try my stick idea. Whether you use the deck cover on not, you can fix a transverse stick securely under the Seawave bow’s velcro flap and, with another couple of those nifty SoftTies, closely fix the WP to the stick. (I’ll be keeping an eye out for a nice bit of ally tube to replace the weathered old bamboo). Required work and added weight: negligible and it may work on other IKs, too. Something to try for next time.
In 2021 WindPaddle.com stopped trading. But Anfibio now make the very similar PackSail for just €119.
WindPaddle Adventure II Weight: 385g (+ 45g ‘reins’ with 2 mini carabiners) Folded 3 times: (takes a knack) 40 x 45cm ø Folded twice: (easier/quicker on the water) 60cm ø Open: 116cm ø
I’ve been waiting for the right kind of wind to have a proper go at WindPaddling my MRS Nomad. Sunday was not that day with SW gusts up to 25mph. Yesterday was more like it: direct from the west at 10-15 meant a chance to run down the full length of Loch Ossian with the wind erring towards the road for the walk back or if it all went wrong.
You forget that starting at the upwind end all is relatively smooth and calm, but soon the fetch kicks up and stays that way. Progress gets a bit lively so you need to be on top of things which includes stashing the paddle safely. I found tucking it across the boat under some red sidelines (left) worked well and are more often useful for manhandling the boat. Lunging after a lost paddle would be bad; so would letting go of the sail’s ‘reins’ and having the boat run over it. The sudden drag and deceleration might see the racing boat slew sideways and flip you out. And before you come up for air your packraft is skimming across the loch like a crisp packet.
I don’t know if gusts vary in direction but you also need to constantly modulate the reins left to right to keep on course. It’s said downwind sails like the WindPaddle have a narrow windspeed window which tops out around 15mph. After that, they start fluttering left to right in an effort to shed the load, as mine did a couple of times. Going out in stronger winds may be too hard to handle or very exciting. As it is, the maximum hull speed of a packraft must be less than half that and, just as a cyclist’s energy to overcome wind drag grows exponentially with speed, so to you can only push a paddle boat so far. A packraft is about as hydrodynamic as a training shoe.
With the gloomy skies I was initially a bit nervous. Controlled by the wind and without a paddle in your hands felt disconcerting; a sunny tropical locale would have fixed that I’m sure. As usual with packboat sailing, it’s never just sit back and skim along like yachts seem to do; you have to keep correcting. At nearly 3m with the skeg fitted, the MRS is longish which must help keep it on line. And as mentioned before, with the WindPaddle you can steer at least 30° off the wind. According to the GPS, 9.3kph (5.8mph) was the peak speed, though most of the time I was zipping along at about 7.5kph. It felt faster as wavelettes broke to either side and occasionally over the bow. With the big Corry paddle, at maximum paddle exertion on flatwater I can hit 6kph for a couple of seconds. So once you relax, sailing can be a fast and energy-saving way of covering distance, and the WP folded up and stashed easily under the DeckPack.
I was expecting to walk back but gave paddling a go and stuck with it, hackling along at 2kph with rests every 10 minutes. Fifteen minutes sailing downwind = a 50-minute paddle back. I still think for the price, weight, bulk and ease of fitting and use, a WindPaddle is a worthwhile packboating accessory.
Adding a rudder to the Seawave inspired me to drag out my cheapo disc sail. I last tried it three years ago on the Amigo (below) when it worked OK, even without a rudder. But of course, a rudder is much better for keeping the boat on the wind while sitting back with the paddle on your lap and your hands on the sail lines.
Pulling the sail out the 3mm fibreglass rod or ‘batten’ broke. I bought some more which, if anything, felt more pliable than the original but before I took it out it was broken in two places. Long sections of fibreglass rod in greater diameters can’t be sent bent so incur much higher postage charges which made reviving my KnockOffPaddle uneconomical. Worse still, removing the splintered rod from the sail (before I decided to ditch it) filled my hands with glass splinters for days. Nasty stuff.
I looked again at the original WindPaddle whose prices have dropped in the UK. Their Adventure II model is up by 13cm to 119cm or 47″ in diameter, making a claimed area of 1.42m (as usual, π x r2. doesn’t add up to ‘1.42’ but never mind). It folds down to 42cm or 16 inches diameter but with squidge some more (ovalise) to tuck securely into the floor of your boat, and weighs just 400g (+30g for a control line). I asked about the cheaper Scout sail and why it’s rated at 4–15 knots when the new Adventure II is rated at 6–30kn. It’s not just the bigger area; the Adv II has a significantly stiffer composite batten to help hold its shape. That’s important and why ships don’t have rubber masts.
A problem with all sails is that they can start swinging from side to side in a recirculating frenzy before either settling down, collapsing or diving for the drink, possibly when the wind is more than they can handle. I recall with previous V and disc sails that lot of your time is spent managing that motion, rather than galloping across the waves like a flying fish, but the promise of achieving that is why I persevere. Update 2021: After having much better results with a AirSail on a packraft, I think some of this swinging could be down to clipping the sail to slack decklines, and not directly to mounts on the boat’s hull. I will try that next time.
When the £116 sail arrived, it certainly had a better quality feel than my smaller knock-off which went for under £20 on eBay and are now under a tenner. The sail fabric feels thicker and the crucual perimeter batten isn’t a regular GRP rod-like in a tent, but a flat flexible composite band about 8mm by 1mm. It takes significantly more effort to fold the Adventure II three times into its 16-inch hoop, but that should result in a more stable sail in action. Sea trials here.