Archive for the ‘Kayak design’ Category

Tom and Jenny’s W Kayak Adventure in a Storm

Thursday, June 26th, 2008

Tom and Jenny surf kayaking at the beach

Tom and Jenny on another day - enjoying surf paddling.

Tom Buddington recently wrote us from Florida:

-”Just thought I’d post a follow-up review after having several more experiences with this truly unique boat. Recently my daughter and I were caught out in what I estimate were 25 knot winds (higher gusts I would bet for certain) and the river became dark and menacing (Gosh it was so calm and peaceful moments before!). The waves were like a white water washing machine. It just happens with those out of nowhere summer storms; I try to be careful, especially with my daughter with me, but you might not ever go out if you worried about the possibility of a storm that wasn’t even predicted. THAT’s the moment of truth. 30 minutes of dark weather paddling at first into and against 20-25 knot winds and 2-3 foot storm slop and then having it on your tail (which is worse in my opinion). We just strapped on our PFD’s NICE and TIGHT and worked it with the Wyak. And she kept us out of the water and got us home. I was impressed the whole time with the stability of the W kayak in serious conditions. We used her best attributes (those twin hulls) and the geography of the Indian River Lagoon and ducked into a safe little cove and waited for things to get calm (we were in the middle and had a long way to go to get to that cove mind you). I can’t stress enough that the ability to alternate between significantly different positions (i.e., standing to riding and a few others) in the W kayak and use different muscles made this one a story with a happy ending. Would have been wiped-out exhausted in any other boat that day.

I speak from the perspective of a guy who loves the water and lives on the water and has been a waterman for, oh, say 30 years. I have 7 other boats of differing designs, 2 of which I have committed to sell to make way for my next Wyak . The W is an incredible craft and I like it.”

And here’s another picture of Tom and Jenny surf paddling at the beach:

Tome and Jenny at the beach surf kayaking


Are Kayaks Boats, and Should They Be?

Saturday, May 10th, 2008

The following text was copied from an article published on a kayak fishing website:

“This next statement is important. Kayaks are not boats. Let me repeat that, kayaks are not boats. There’s a lot of room in a boat so you can move around. Even a very small boat has much more room then the largest kayak…. -Let’s look at the situation. In a kayak you’re pretty much restricted to staying in the seat area. You’re going to be most comfortable here and this is where the stability is. “

(The author of this article is unknown)

Why is this passage interesting? -Because it reflects reality as perceived by all people who fish from SOT and SIK kayaks: Restricted space, limited mobility in the cockpit, clutter and eventually discomfort - although the anonymous writer refers to the seat area as being the ‘most comfortable’ for the kayak fisherman to be in, which makes sense only because there is practically no alternative in SIK and SOT kayaks…

Technically, sit-in (SIK) kayaks are boats: They are small, hollow vessels stripped down to the minimum functionality in terms of load capacity, speed and functionality.

Sit-on-top (SOT) kayaks are not vessels - they are boards, which can be completely filled with foam and contain neither passengers nor cargo. This is why it makes more sense to classify them as ‘not boats’, as the writer did.

W kayaks are boats, with all the characteristics of boats. They even offer enough internal space and stability for the passengers to change their location within the passenger compartment called ‘cockpit’.

The author of that article quoted here was probably unaware of the existence of W kayaks when he/she wrote it.

W kayaks even offer passengers to stand up while propelling the boat, and when fishing from it, and that’s a feature that not all bigger boats can offer.

What SIK, SOT and W kayaks have in common is their small size and light weight that offers their owners the possibility to cartop them and carry them along considerable distances on shore. This small size and light weight are essentially what differs fishing kayaks from fishing canoes, which are usually bigger and heavier - although some of the bigger fishing kayaks are as heavy as canoes, and may require a trailer…

Fishing Rowing Kayak With Outriggers

Thursday, May 1st, 2008

Wayne T’s W fishing kayak is an interesting project from a number of aspects:

He first outfitted it with a pair of large size outriggers because he wanted to enjoy more stability at his advanced age (68). When Wayne is in his boat the outriggers barely touch the water and generate just little extra drag.

Wayne also outfitted his kayak with a pair or oars, with the oarlocks attached directly to the cockpit rim. He explains that the reason he did it is because it gives him better control over the boat than a paddle does.

Fishing kayak with oars

“This is the best one man fishing boat I’ve ever used and I have tried them all…” He says, and judging by his catch he has evidence to back his words:

Rowing kayak and fisherman

When he paddles it he uses a canoe paddle made from his Mohawk paddling kit.

It looks like Wayne used a pair of oars and oarlocks he took from a small dinghy, and all he had to do was to reinforce the kayak’s cockpit rim before attaching them to his boat.

Oars for fishing kayak

Wayne also chose the simple and easy way to build his outriggers, and you can read more about what he did in this boat review.

Altogether, Wayne’s boat shows that with some planning and no big effort, kayak fishermen can literally transform their W fishing kayaks into a very different type of boat while preserving most of the advantages the original design offers.

New Position: Riding Over Your W Fishing Kayak

Sunday, April 27th, 2008

Riding over is yet another position enabled by the new 2008 kayak design.

It’s basically a static position, for fishing, resting, chatting, shooting pictures, cooling your feet in the water etc.

Riding over a fishing kayak

You can paddle while you ride over your W kayak, but you won’t go very fast…

Riding over a fishing kayak

Photography: Jim Green

Kayak Side Flotation: Why Use It, and How Does It Work?

Thursday, March 20th, 2008

The 2008 W Kayak models come equipped with one or two pairs of detachable, side flotation modules. A flotation module is a 5 ft long plastic foam ‘noodle’ with a bungee cord going through its core. The bungee hooks at its ends enable attaching the module to Nylon eyelets on top of the W hulls’ tips.

The side flotation modules are essentially recovery accessories: In case you capsized your W kayak they can help preventing it from overturning, and if your kayak is overturned they help keeping it afloat, and by that make it easier for you to turn it back.

In some cases, when your W kayak is laying on its side, the presence of a single flotation module or better - a pair of such modules under the top side of the lower hull can lead to the boat righting itself, and this is how it works:

The top part of the lower hull is prevented from sinking by the presence of the side flotation module ‘A’.

The flotation module helps keeping water from from getting in by pushing the cockpit rim above the surface.

If water gets into the lower hull through the cockpit opening it will flow to area ‘B’ and make this part of the boat heavier. By making it increasingly heavy it would make it tilt and regain its normal position - that is with the cockpit opening facing upward.

fishing kayak side flotation module in action

If your W Kayak doesn’t right itself in such a situation it’s easy to right it by unbalancing it.

It’s clear to see why in any case outfitting your W kayak with two pairs of such flotation modules is more effective than outfitting it with one pair.

In sum, whether you’re taking your W kayak on a paddling, camping or fishing trip, it makes sense to take preventive measures that can minimize the severeness of a capsize accident by outfitting it with side flotation modules.

Whether you’re taking with you on board fishing tackle, camping gear or other stuff - it’s always a good idea to secure this equipment by attaching it to the boat. You will find there are plenty of spots inside the cockpit that you can use to attach bungees, carabiners, hooks and rope to secure your gear.




Outrigger for W Fishing Kayak

Thursday, March 13th, 2008

In a previous post on this blog we discussed different outrigger configurations for the W kayak.

This figure shows our general recommendations for a simple and easy to build DIY outrigger.

Note that the outrigger is voluminous, and placed far enough from the boat itself to enable paddling. Also note that the transversal bars are sturdy, and they are attached to the top of both hulls for more structural strength. This is important especially if you’re planning to place an outboard motor on the transversal bar, but it’s also important for sailing, tandem etc.

Outrigger for W fishing kayak

The bottom of the outrigger float should be on a higher plane than the bottom of the kayak’s hulls. This is because you need to take into consideration the fact that its own buoyancy will push the float upward once it’s in the water, especially when the boat is heavily loaded and therefore strongly pushing the float downward. This could cause the transversal bars to bend and possibly even break under the stress.

The third hull (float) should be long and voluminous, but preferably shorter than the kayak’s hulls, so as not to cause steering problems.

How to Attach the New Side Floatation Modules to Your W Kayak

Tuesday, March 11th, 2008

The new 2008 W Kayak models feature a new type of side flotation modules. These are plastic foam ‘noodles’ outfitted with an internal bungee cord and a hook on each end. The hooks should be attached to the top-side Nylon eyelets that are closer to the cockpit, as shown in this picture:

Side flotation module attached to W kayak

You can attach such side flotation modules to older W Kayak models as well.

The advantage of this new configuration is that the flotation is positioned in a way that makes it more effective for recovery, and it will stay in place even in rough waters. It’s also easy to attach and detach, and you can outfit your W Kayak with one pair or two pairs of modules on each side of the cockpit.

Many W kayak fishermen like the old flotation that we applied over the cockpit rim of our older models: They put their paddles across the cockpit and it’s silent when they do it. You can outfit your 2008 with a similar solution too - Just get some or the big, hollow foam noodles in a department store, cut a groove along one side and push the cockpit rim in. You can secure them in place using plastic tie-straps.


Standup Kayak Fishing - Choosing a Stable Fishing Kayak

Saturday, March 8th, 2008

You may ask yourself “how stable should a fishing kayak be for me to feel comfortable in?”
The answer is simple, and widely discussed on this blog, but pictures are better than words, and a movies are the best for showing such things.
So, according to us, a fishing kayak should be stable enough to enable you to fish from it standing in full confidence, and this is the basic test in flat water, as demonstrated in this 12 seconds video:

A six foot, 200 lbs guy is standing up in his W kayak, he’s jumping up and down repeatedly, and hopping from one leg to another. The W Kayak is the only fishing kayak that offers such stability, and therefore it’s the only one enabling fishing standing in full confidence as well as paddling standing with the same ease and confidence as sitting.


Trends in Fishing Kayak Design

Friday, March 7th, 2008

As the popularity of kayak fishing increases more kayak designers and manufacturers are drawn to offer their solutions to kayak fishermen. Interestingly, if one can judge from the solutions the main problem that needs addressing is the fishing kayaks’ poor stability.

Out of three recent, original monohull designs all three are explicitly designed to be stabler than regular fishing kayaks, and two out of the three represent experiments in combining canoe features into the kayak design - for the purpose of increasing overall stability.

The two canoe-like or canoe hybrids are different by the fact that one is a SOT and the other a SIK. Both are very wide, and are offered as solutions for flat water fishing. This could mean that either their manufacturers estimate the offshore kayak fishing market to be too small to be worth addressing, or their boats not to perform well enough in the surf. This brings up again the question of seaworthiness, and whether these designs are indeed stable, comfortable and and safe enough to be used for standup fishing.

The third new fishing kayak design is a monohull as well, but it departs from the conventional approach of trying to increase stability by making the hull wider. This design offers a mechanism enabling splitting the rear part of the kayak in two and pulling the ends sideways, thus creating a stabler platform for the fishermen to fish from. The obvious problem with this design is that once the fishing configuration is deployed the ‘kayak’ becomes nearly stationary since paddling it does not meet any standard of efficiency. This fishing kayak is not offered for offshore fishing either, which again implies that its manufacturers may have some concerns about its possible performance in the ocean.

In this context it is interesting to see that another manufacturer of fishing kayaks now offers outriggers to accompany their kayaks, which is yet another fact that shows stability to be a problem at the core of the kayak fishing concept.

Overall, the appearance of new designs and solutions that address the stability problem is a sign showing that some kayak designers and manufacturers are attentive to the real problems that kayak fisherman face. Whether any of the solutions offered are viable in the long run remains to be seen.


Kayak and Canoe Floatation and Stabilizers - What’s The Difference?

Thursday, March 6th, 2008

Those who know the difference are likely to ask themselves why bring up such a comparison when flotation and stabilization have nothing to do with each other. Well, this is true but some people tend to be confused by the looks of side flotation in certain canoe models and in the W Kayak.

For the benefit of these people we need to explain that indeed flotation and stabilization are two different functions:

Canoes and kayak are outfitted with flotation in various forms - from inflatable bags to closed cell foam. The flotation element/s is lighter than water and impermeable, and its purpose is primarily to prevent more water from getting into the boat in case it is strongly leaning sideways or turned over. Flotation can be applied inside and/or around the boat, and it is basically intended to serve as means of recovery.

Stabilizers are floating devices on the boat’s sides, and they touch the water nearly all the time. Their purpose is to prevent the boat from leaning too much sideways, and they do it by offering extra lateral buoyancy. Stabilizers contribute both to the boat’s initial (primary) and secondary stability, meaning that they enhance both the feeling of lateral stability as well as the actual stability of the boat. Stabilizers are also called outriggers and sponsons, and they act as means of accident prevention as well as comfort enhancers. Large size outriggers can in some cases increase the canoe or kayak’s load capacity.

The side flotation modules on the W Kayak’s sides are not stabilizers, and they never touch the water in normal conditions. Their function is the help preventing the W Kayak from completely overturning in case it capsizes, and simply help it float above the surface if it did overturn and water got in. In such case the location of the side flotation modules helps turning the boat back.

If the W Kayaker or kayak fisherman bailed out quickly enough and the boat leans strongly on its side without him/her pulling it down the presence of a flotation module under its side can make the W right itself without help.


The W Kayak at the Denver Museum of Nature & Science (DMNS)

Wednesday, February 27th, 2008

It’s been a year since the Denver Museum of Nature and Science (DMNS) exhibited a W Kayak in its Engineer It! exhibit.

The DMNS chose to exhibit the W Kayak to represent technical innovation in boat design.

W kayak exhibited at the Denver Museum of Nature & Science (DMNS)

You can pan through an online interactive view of the exhibit by clicking and dragging your mouse cursor on the frame (requires Apple QuickTime viewer)

The organizers of this exhibit reported that the visitors loved the boat.

I thought that event worth remembering since it was the first time the W concept was officially recognized.

Yoav

W Fishing Kayak by John Forney (2)

Monday, February 25th, 2008

John Forney has a new web page where he presents his work in designing and building kayaks  and small boats. After this beautiful wooden W fishing kayak John’s next project is a skin-on-aluminum-frame W boat.

John Forney standing in his 12ft wooden W fishing kayak

An Idea Whose Time Has Come

Thursday, February 21st, 2008

Yesterday I had a long conversation with a man who has built and designed fifteen small boats in recent years, including kayaks. He’s an avid fisherman too, and we naturally started talking about kayak fishing.
When the conversation got into details it became clear that although kayak fishing has grown tremendously in recent years the number of people who fish from kayaks is still very small in comparison to the number of people who fish from motorboats.

We easily agreed that sit-in kayaks, and recently SOT kayaks don’t provide a comfortable enough platform for fishing, and outriggers were an invitation for your fishing lines to get caught in them.

He found a funny way to summarize the situation, saying: -”Kayak fishing is a great idea with the wrong boat.”

Needless to say that we found it easy to agree that the W is the kind of boat that can take kayak fishing to the next level.

Yoav


The W: a Kayak for Disabled Paddlers and Fishermen?

Monday, February 18th, 2008

People sometime ask whether the W kayak offered a good solution for disabled people and people with severe problems in their legs who would like to go paddling and kayak fishing.

The answer is that the W Kayak is capable of offering unsurpassed stability due to the fact that it enables paddlers and fishermen to use the full potential of their legs for balancing.
If a paddler or fisherman has a problem that prevents them from walking it’s unlikely that they’ll be able to use their legs for balancing their W kayaks, not only in the standing position but in all other positions as well.
As its product info page states, the W may not even fit people with serious knee problems - for the same reason.

On the other hand, people who suffer from back problems that prevent them from using ordinary kayaks may find the W kayak easy to get into and out from, and they are likely to appreciate the comfort offered by its 14.5″ high saddle.

Due Diligence in Testing Kayaks

Friday, February 15th, 2008

“Due Diligence” is a term you learn in business school. It’s used in the context of public accountants who must investigate a company’s situation seriously and responsibly before issuing a report on its situation.

In the world of kayaking and kayak fishing it would mean testing a new kayak with an open mind and a will to learn it thoroughly, while allocating sufficient time for the job. It means to distance oneself from possible preconceived ideas about the boat, its capabilities and the proper way to use it, and report one’s findings fairly and accurately.

On some occasions I’ve seen some professional paddlers and reporters express themselves in a way that showed overconfidence in their ability to learn, judge and evaluate the W kayak instantly or within a very short time - too short for due diligence.

The following pictures show Topher Reynolds (c), who took part in a series of tests for Paddler Magazine (see: Testing The W Kayak by paddling guru Ed Wesley). The reason I like these pictures is because they show Topher successfully performing tests that I’m incapable to perform myself, and that’s what I’d call a good example of due diligence.

Yoav

Topher Reynolds testing the W kayak (2)Topher Reynolds testing the W kayak (1)

What Color and Form For My Fishing Kayak?

Thursday, February 14th, 2008

The color question keeps coming back and probably would forever.
If you’re just paddling you probably want a bright yellow kayak that will be the most visible to fast motorboats drivers.
If you’re hunting or bird watching you’d better choose a dark green or camouflaged kayak, for obvious reasons.

The answer becomes more complicated when it comes to fishing - From an underwater perspective the color of a surface object is a minimal issue. Flash and shine are more likely to cause a reaction among fish, as well as sudden motion and noise. Having said that, you can try and improve the odds:

Regardless of what colors various fish species are capable of discerning, what we know and can test for ourselves is that when you’re in the water you usually perceive the bottom to be dark, and when looking upward you’re actually looking at a source of light - whether it is strong of feeble, depending on circumstances.
In fact, nearly all fish have their back darker than their bellies, so that they would blend in with the bottom when looked upon from above, and blend in with the sky when looked upon from below.

So far, the answer seems to be ‘choose a fishing kayak that has a light bottom’, doesn’t it? -Well, not necessarily, because color (or brightness, actually) is only part of what fish can see and react to.
The other thing (besides motion) is the basic form of your kayak: Like all animals who fear predators, fish can instantly discern a pattern that looks like a predator and react to its presence automatically by either swimming away or hiding. There is no thought whatsoever involved in such pattern recognition process - It’s just a basic physiological reflex.

Your kayak’s contour on the bright sky background can easily fit into a ‘Predator’ pattern because the form of a traditional monohull kayak is basically one of a fish. In fact, one of the two basic monohull forms is called ‘Fish’, and the other is called ‘Swede’ and it is identical to the Fish form except for the fact that the kayaker is facing the other way…
So, it would make sense to try and ‘break’ this fish-scaring pattern by camouflaging the bottom of your kayak to make it look like something else, such as floating branches or flotsam.

From this aspect, the bottom of a W kayak looks like two straight and parallel objects not alike a fish form. This is a somehow better start, and whether you choose a bright colored W Kayak to blend with the bright sky background or a dark W Kayak to make its contour resemble even less to a predator fish is up to you.

Stand Up Kayak Fishing in Full Confidence

Wednesday, February 13th, 2008

Today I watched a video showing a young, athletic looking, rather short guy demonstrating fly-fishing standing in a wide, canoe-style kayak.
Although the water was perfectly still he performed casting and other fishing maneuvers while standing rather awkwardly: His feet were too far apart to offer an optimal basis, and his movements seemed too slow, not energetic and not at all spontaneous. The way he paddled was awkward too - he looked as if he was making an effort to keep his balance and repeatedly about to lose it.
He was obviously not feeling fully confident fishing standing in that boat, and I kept thinking that he had to be extra careful because had he lost his balance he would have had to swim, and possibly even deal with an overturned boat and some fishing tackle lost.
There was no way for him to land back in his seat in case something happened that would make him lose his balance. The seat was too low and the boat too unstable to offer a solution to any “What If” scenario, and everybody knows (or should know) that stuff happens when you’re out there fishing, and you should be prepared to deal with the unexpected or else risk some unpleasant consequences.
In this sense the kayak featuring on that video was less stable, less comfortable and less safe than a wide fishing canoe that offers a higher seat as something to fall back on, literally.
However, this lackluster demo movie shows that stand up kayak fishing is no longer viewed as impossibility or as an unnecessary requirement, but it’s becoming a problem that kayak fishermen expect manufacturers to solve, which is good news for Wavewalk since we already solved it completely:


Kayaking Back Pain and Leg Numbness (Part 2)

Monday, February 11th, 2008

Again, according to Isaac Newton’s Third Law whenever a body exerts a force on another body, the latter exerts a force equal magnitude and opposite direction on the former.

This also means that when your torso’s entire weight is combined with the weight of your thighs, and together this weight pushes down against your seat, your seat pushes back up with an equal force on your posterior and lower back.
One more, instead of having your powerful legs support your body weight, you find yourself in a position where you have to support most of your legs’ weight with a part of your body that already supports your torso’s weight.
This vertical pressure is exerted during the whole time you’re seated in the traditional kayaking position. Furthermore, it is combined with the horizontal pressure that your legs exert on your lower back (see part 1), thus enhancing the ergonomic problem in your lower back.
No wonder cushioned seats and various ‘lumbar support’ solutions don’t change much.

Traditional kayaking position


Kayaking Back Pain and Leg Numbness (Part 1)

Sunday, February 10th, 2008

First, some basic mechanics:
According to Isaac Newton’s Third Law of Action and Reaction, whenever a body exerts a force on another body, the latter exerts a force of equal magnitude and opposite direction on the former.

In other words, when your legs push your feet against your kayak’s foot braces (or footrests) they also push your lower back against your seat - and as a result the seat pushes back against your lower back with an equal force.
Your legs have the most powerful muscles in your body, and they constantly generate this force from the moment you sit in your kayak until you get out of it.
The L kayaking position deprives your legs from their natural role, and together with the seat and footrests turn them into a source of ergonomic problems for your back.
All that unnatural pressure is bad for your legs as well, and this is why you suffer from leg numbness, poor circulation and sometime pain and even chronic injuries.

The traditional kayaking position


Following Jeff’s Fishing Trip

Sunday, February 10th, 2008

Today Jeff emailed me this short addendum to his fishing report from yesterday:

“I wanted to mention these two things. First not having really to lift much of anything is great. From the time I put my W into my pickup truck until I arrive home I only lift it to put it away. At the launching site in and out it’s only a pull out, lower, and drag the water (one trip by the way with all gear) then reverse when I’m done. No strain at all.
The other thing is the saddle positions you can get. I found that by bending all the way forward while seated you can stretch out the back issues and take off a bunch of strain. Nothing else allows a position like that except maybe riding on a horse, and I would guess loading a horse in my Ford Ranger would negate any gains from the position. Besides the W doesn’t eat much and you don’t have to clean it’s stall.
I had to mention this stuff because today is the best my back has felt in weeks. Maybe it’s the W maybe not.”

Why do I think this is important? It’s because you can’t overestimate good ergonomics since it is critical to the well being of any paddler and kayak fisherman, and because unlike stability and mobility it’s hard to demonstrate in a video or discuss in an article.

Yoav