Tag Archive: seaworthiness

Review of my Wavewalk S4

This review of the Wavewalk S4 kayak skiff was written by the guy who designed it, as well as the W500 and W700.

Why this Wavewalk S4 review?

Typically, kayak and boat reviews are written by clients who mean what they say, but aren’t necessarily professional, or by people that the manufacturer paid to review their product. The latter reviews are not objective to begin with, and in many cases they are not even professional. Designers seldom publish reviews of the kayak or boat that they designed.
Other reviews commonly found on the web are fake, and they were written by individuals who are affiliated with the manufacturer of the reviewed product (fake positive reviews) or with their competitors (fake negative reviews). Some fake reviews that appear on websites that offer people to publish kayak and boat reviews appear to have been written under an alias by the website owners, probably in order to make their website look more popular than it is in reality.

Wavewalk does not pay people to review its products, and it does not post anonymous reviews on websites that offer to do so to anyone who can come up with an alias and a few sentences. We think that such websites have a low credibility from the beginning, and their credibility has declined over the years, as people who read the reviews that these websites feature have become used to apply critical reading, and common sense.

We decided to publish our own review of the Wavewalk S4 after it’s been out there for nearly a year, which is enough time for us to see what it can do, and what our clients think of it (Read S4 clients’ reviews » ). In this review of the S4, we try to compare our initial plans for this boat to what it does in reality, and we also try to look into the future, as much as possible, and see what it could still do.
Many Wavewalk clients are interested in the design of kayak and small boats, and we think that such people may have a particular interest in reading this review.

Why the Wavewalk S4?

It takes close to a hundred thousand dollars to produce a new product such as the S4 in terms of time and money invested in the design and manufacturing of a capital tooling (rotational mold) for it. Once the product is out there, it takes more time and money to test and promote it.
This means that before a small company decides to invest in the development of such a product, it needs to make sure that it has a good reason to do so, and preferably more than one good reason.

Before we started defining the requirements from a future Wavewalk product, we looked at existing products in various markets, including our own W700 that we had launched back in August of 2015 –

The W700

From the moment we launched it, the W700 became an immediate, remarkable success, both as a tandem kayak for touring and fishing (and hunting, photography, etc..) and as an ultralight portable motorboat / microskiff. This success gave us the motivation and the funds to take the Wavewalk concept to the next level. Our clients loved to motorize their W700, but few were willing to give up paddling altogether, and this convinced us that paddling was important, so we decided that our next product, namely the S4, will be more of a high performance, fast and seaworthy motorboat with a bigger payload capacity, but it would still offer good paddling capabilities as a kayak and a canoe. Another thing that our clients love in their W700 was the ability to car-top it without a problem, and this meant that the next Wavewalk had to be a car-top boat too.

Other boats

Before we started to design the S4, we looked at different products in a number of markets, and tried to identify unfulfilled needs as well as opportunities for our new product –

  1. Jon boats – These popular small motorboats feature a generally flat bottom hull and a spacious open cockpit, and they usually offer sufficient stability for a crew of one person, on flat water. When the crew includes more than one person, or the water gets choppy, these boats tend to deliver insufficient stability, and generally speaking, they are not seaworthy, including bigger and therefore more stable models that are stable enough on flat water. Since Jon boats are typically made from aluminum, they are not lightweight enough to be car topped, at least not by one person. And last but not least, paddling a Jon boat is not an option, at least not over a meaningful distance, so these boats are excluded from traveling in very shallow (dubbed “skinny”) water, and in water where much vegetation is to be found – unless they are outfitted with a surface drive (a.k.a. “mud motor”), which is typically more heavy than a standard outboard motor, and takes more room in the cockpit. The next Wavewalk had to offer as much carrying capacity as a good size Jon boat, while being at least as stable, and considerably more seaworthy. This had to be achieved while keeping the new product from being overly wide, since wide boats don’t paddle well. Needless to say that the new boat couldn’t be nearly as heavy as a Jon boat, since it had to be car-topped by one person. We achieved all this with the S4, and more, including successfully outfitting an S4 with a surface drive, as demonstrated by Chris Henderson, from Washington state.
  2. Microskiffs – Small skiffs (“microskiffs”) are generally similar to Jon boats, and they too are designed mainly for fishing on flat water. The main differences are in the material used to make skiffs (typically fiberglass), and typical additional deck features and structures. These differences reflect the fact that microskiffs are used primarily in saltwater, which is corrosive for aluminum, and the fact that people who fish out of microskiffs like to practice sight fishing. Microskiffs don’t paddle well, to say the least, and they are too heavy to be car-topped, including a product that’s essentially a rotationally molded motorized board for a single user who’s not particularly heavy, and who fishes in flat water only. The next Wavewalk had to feature a front deck, for casting, go as fast as a small microskiff, and be more seaworthy – All this while offering its users to launch anywhere, namely to transport it on top of a vehicle, and not by trailer. We did it.
  3. Motorized kayaks – Since both the W500 and W700 had already surpassed all products in this category, we deemed motorized kayaks too lame to serve as a basis for formulating requirements for a next generation Wavewalk. This is true for all but one pretty exciting kayak-like product for one person that’s officially designated as a boat, and is propelled by a 7 HP jet drive. When we weighed the pros and cons of a proprietary jet drive and compared them to the advantages offered by outboard motors, it became clear to us that the latter were the way to go, due to their initial cost, ease of troubleshooting, low maintenance, and high quality as well as effective local service offered to our clients. As for speed, we decided that the next Wavewalk would have to be at least as fast as that exciting jet-drive kayak-like watercraft, and if people had a special need to drive their S4 in extremely shallow water, they could outfit their new Wavewalk with a surface drive (mud motor), which works better than a jet drive, since it doesn’t get clogged. The next Wavewalk had to be a car-top boat, and portable in terms of carrying it over rugged terrain, something that said jet drive kayak-style watercraft is not. The new Wavewalk also had to be seaworthy, and transport at least two full size adult passengers, which that jet driven kayak style boat cannot do. We achieved all that.
  4. Personal Watercraft (PWC) – Such comparison may seem odd at first sight, but Wavewalks and PWC share one important feature, which is their longitudinal saddle seats that offer their users to balance themselves in the most intuitive and efficient way, and enhance their boats’ performance both in terms of stability and seaworthiness. In this sense, it was appropriate for us to think about PWC, and establish some requirements from the new product that would have nothing to do with fishing or paddling, but would go to what people like in PWC, namely speed, seaworthiness, and fun. We realized that in order for an S4 to reach speeds that are close to the speed of a small, basic PWC, the S4 would have to be outfitted not just with an extremely powerful outboard motor, but also with a proper steering and control system to go with it, be it a wheel or a bar, something that hasn’t been done, so far. Captain Larry Jarboe clocked 17 mph in an S4 powered by a 9.8 HP outboard motor, and the same boat was driven at full throttle offshore in choppy seas, with the drivers holding the throttle grip in one hand. In comparison, a typical PWC can go at 40-50 mph, and the faster ones can go at much higher speeds. Something to think about… On the other hand, an S4 is much less expensive than a PWC, including small ones designed for one person, and it is also more versatile.
  5. Inflatable dinghies – These fast, stable and seaworthy boats are popular with yacht and big boat owners, who use them as boat tenders. But these small inflatable boats are uncomfortable for their driver and passengers, who find it hard to stay dry in them, and they don’t paddle well. As for standing in them, it is not easy either. Compared to them, the W500 and even the W700 were inferior in terms of load capacity and speed, but neither of these is a problem with the S4, with its carrying capacity of 650 lbs and the high speed in which it can go, even in choppy water. Simply, the S4 is as seaworthy as a good size inflatable dinghy, while being drier, more comfortable, and offering better paddling and standing capabilities. The S4’s polyethylene hulls are more durable and dependable than the soft hulls of inflatable boats, and clients who use an S4 as a boat tender report the highest degree of satisfaction, even when they tow the S4 behind the mother ship, which is the kind of performance that we weren’t sure it would achieve when we started designing it.

Other considerations

  • Keeping the kayak designation and paddling functionality – In order to make it easier for our dealers to sell the S4, and for our clients to register it, we wanted to keep its design within the requirements that would designate it as a kayak, and not as a boat, and that wasn’t hard to do. We also wanted to keep the S4 work as a paddle craft, which we achieved by making the sides of the cockpit slant, thus allowing the paddlers to move their paddles more closely, easily, and effectively alongside the kayak.
  • A motorboat’s look – On the other hand, we wanted to distance the S4 as much as possible from the image of a kayak, because in comparison to motorboats, kayaks are sluggish, uncomfortable, unstable, and wet. Therefore, we got rid of all deck rigging items that are typical to kayaks, namely eyelets, hooks, bungees, rubber carry handles, and even flush mounted rod holders. The S4 comes with two integrated (molded-in) carry handles in its front tip, and a molded-in carry handle on each side of its rear hull tips. These molded-in carry handles are stronger than kayak handles that are riveted or bolted to the deck, they are as comfortable, and they look better.
  • Keeping the S4 cost low – The rotational mold for the S4’s twin hull cost more that the mold for a typical full-size SOT kayak. We also had to mold the saddle for the S4, but luckily, we managed to design it in a way that allows us to use the same saddle as the one used in the W700. This saved us tens of thousands of dollars on a mold for an S4 saddle, and we were able to keep the S4 unit price within a reasonable range, considering its high performance in so many applications.
  • Building it tough – Carrying heavier loads while going at higher speeds meant that the S4 would have to be tougher than the W700, which is why we decided to incorporate two wooden brackets in every S4, standard, compared to just one similar structural element in the W700.
  • The motor mount challenge – The S4 is made from high density polyethylene, similarly to other kayaks as well as a motorized board offered as a one-person skiff. Polyethylene is a resilient material, which makes it highly resistant to impact, but this critical advantage comes at a cost, which is that polyethylene walls tend to be flexible relatively to similar structures made from more rigid materials, e.g. fiberglass and wood. We knew that a motor mount that would serve to attach to the S4 heavy and powerful motors that generate a lot of torque couldn’t be made from polyethylene only. If we wanted such mount not to flex, it should feature a totally rigid and very sturdy mounting plate, made from the right materials for the job. This is why we created the S4’s motor mount with a broad basis molded in polyethylene, and a mounting plate made from a wooden composite named Medium Density Overlay (MDO), which has served us successfully for years in the W500 and W700. The basis of the S4’s motor mount structure is firmly anchored on both its sides in the boat’s two hulls, and it is bolted both to the cockpit’s rear wall and to the saddle’s rear wooden bracket, whose top is inserted into the cockpit’s spray deflector (coaming). So far, this combination of polyethylene structures, wood composite board, and steel, has proved itself to work under difficult conditions, with powerful motors running at full throttle, and the boat going at high speed in ocean waves.

Conception, birth, and growth

A new boat often starts as ideas that the designer’s mind generates in reaction to external stimuli, such as impressions, challenges or compliments. The general idea and major challenge with the S4 was to create a boat like which the world has never seen before, and no one had thought would be possible. We knew the Wavewalk invention would guarantee that whichever design we choose for a Wavewalk boat that’s wider than the W700, it would automatically become the world’s most stable kayak, as well as the world’s most stable boat for its size. Within this framework, we still had a lot of things to think about, including –

  • The new front deck – The main challenge was to depart from the previous ‘catamaran’ look, and create a front that would still perform as a twin-hull (catamaran), but offer some protection from spray as the boat goes in waves at high speed. The totally redesigned bow had to feature a front deck that would serve as a casting platform, similarly to casting decks that skiffs feature. Since we knew that the S4 would serve crews of two and possibly three anglers, a deck extending in front of the cockpit would also serve to put more distance between crew members, and thus make the boat both more functional and more comfortable for them to fish from. This is to say that the S4’s new style of front deck is the result of both aesthetic and ergonomic, namely practical considerations. Developing these ideas and turning them into a computer aided design (CAD) file required months of hard work, plenty of problem solving, and innovative thinking.
  • Displacement hull vs. planing hull – Understanding this subject requires some knowledge in kayak and/or boat design. The problem we addressed was that paddle craft (canoes, kayaks, etc.) travel at very low speeds, and the most efficient hull form for such low power propulsion and low speeds is called a displacement hull. In contrast, motorboats travel at much higher speeds, and people who drive them like to travel in a planing mode. The most efficient type of hull form for a small motorboat is a type of hull called planing hull. The S4 was required to serve both as a paddle craft and a motorboat, and do well in both applications. We realized that unlike the W700, most people who use the S4 would choose to motorize it, so we designed its hulls in a way that would offer top performance with a powerful motor, and still paddle well enough, and this is basically what the S4 has achieved in reality – One person can paddle it effectively and easily without reaching high speed, but they can also drive it with an outboard motor that’s powerful enough to propel bigger and heavier boats, and go at  speeds that are considered high even by small boat standards, and inconceivable in kayak terms. Being big for a kayak, the S4 paddles better with a tandem crew than it does in a solo mode. It paddles equally well in canoeing and kayaking modes. In sum, the W700 is a great kayak that you can effectively motorize, while the S4 is a great motorboat that you can effectively paddle. It’s a subtle difference that’s worth remembering if you’re not sure which of these two models is better for you.

Launching the product, and testing it – We launched the S4 in May of 2017, and since then, the S4 has kept growing in terms of proving what it’s capable of doing. We were pleased to see that a 214 lbs guy could easily stand with both feet in one of the S4 hulls, and turn around, without flipping the boat, and without even making it tilt by much. We were more pleased to see three adult paddlers standing in it and paddling without any problem. But we were astonished to see three full-size guys fish standing out of a motorized S4, with one of them landing a good size fish in the boat. Many thanks to Mike Silva for these amazing pictures!
We loved watching the videos that showed the S4 driven through lily pads, propelled with a surface drive powered by a 6.5 HP motor. But driving an S4 powered by a 9.8 HP going at full throttle was a blast, and it was such a smooth drive that it certainly opened the door for testing it with more powerful motors, as a couple S4 owners already said they will do.

Multi-boat configuration – Another innovative and inspiring development was Captain Larry Jarboe’s S4x3 multi-boat, composed of a motorized S4 hip-towing (side towing) an S4 on each side, and thus allowing the driver to transport a much larger number of passengers, in full comfort, and with the stability of a large size pontoon boat. Captain Jarboe uses the S4x3 multi-boat for his guided diving tours in Key Largo.

Big boats, seaworthiness, maintenance, etc. – Interestingly, the S4 is already used, successfully, as an alternative to full-size skiffs. Its users prefer their S4s to the large size boats that they had previously used because of its easy launching, shallow draft, and better seaworthiness in choppy water. Indeed, we found that if you happen to get seasick in a boat going or anchored in the chop, riding the saddle of an S4 would instantly cure you, whether you’re driving it or just taking a ride in it as a passenger. The S4 is practically immune to other motorboats’ wakes, including big and fast boats traveling at a short distance from it, and this is not an exaggeration but an accurate description of a pleasant reality. And the S4 works as a paddle craft, so that it’s practically impossible to get stranded at low tide when you fish from it. Another reason to prefer the S4 over a full size boat is that it’s totally maintenance free, and if you’ve never owned a boat, it would probably be hard for you to appreciate the importance of this fact.

Spray shield – It turned out that when one person drives the S4, even at high speed, and even in the chop, the hulls and front deck deflect much of the spray that’s generated when they hit waves. However, when a passenger sits in front of the S4 driver, their weight lowers the bow, and it tends to generate more spray when it hits waves. And this is when a spray shield can still be useful.

A new type of watercraft – The S4 has already shown that it’s a new type of watercraft with a performance envelope that sets it apart from all boats of similar size. But it still has room to grow, in the sense of showing that it’s capable of more. We’ve already mentioned more exploits with mud motors, as well as bigger and more powerful outboard motors. We’d also like to show how a sculling (shell rowing) coach from Massachusetts uses his S4 as a coaching boat because he’s found that it generates a much smaller wake than other boats of similar size, and a small wake is the name of the game when coaching this sport is concerned.
On the other side of the performance spectrum, we should find an opportunity to run the S4 in rough seas with inflatable flotation modules attached to its sides, RHIB style (RHIB stands for rigid hull inflatable boat).
And on a completely different angle, we’re waiting for clients who use their S4 in whitewater, as a guide boat and a raft, to send us pictures too.

Extreme efficiency with a 1:6 weight to load ratio (payload ratio) – The S4 weighs a little less than 100 lbs without a motor, and it can carry a payload of over 650 lbs including a motor. This is a solid 1:6 weight to load ratio that shows how efficient the S4 design is.

Bottom line

We could have talked more about our S4, but with 3,700 words, this review is getting too long for a reasonable person to read – Thank you for making it this far  🙂

Testing the Wavewalk S4 in our maiden offshore voyage

By Magnus Chung

San Francisco Bay Area, California

I finally got a chance to take the S4 out and test it on the water. It’s working beautifully with the Honda 2.3 engine. We actually have 3 people seat in it comfortably and both paddling and using the motor works quite well.

We launched the S4 at a rocky beach, and dragging the S4 over the sharp rocks caused some scratches on the bottom of the S4. This is a minor issue, and I’ve decided not to worry about it 🙂

Overall, I am very satisfied with the S4. Great Kayak and I can’t wait to show it off to my friends on the next fishing trip!

I was too busy with the S4. There aren’t any pics while the S4 is cruising in the water since all three of us were in the S4 and didn’t have anyone to take pictures from the shore.
Here are some of the pics my friend took on the beach –

 

 

 

UPDATE – August 2018

I have been taking the S4 to many fishing and clamming trips and it’s working great and impressed a lot of people!
A couple times we encountered bigger than expected swells so if it wasn’t the S4, we would have tipped over for sure. Most of the people who ride on it confirmed the S4 is the most stable kayak compared to everything they have seen.
One small thing I noticed is that when we have close to max load on the S4 in the bigger waves, the water splashes front and gets in the cockpit, so I think the splash shield may help with this.

 

Driving an S4 motorized kayak skiff with a 9.8 HP Tohatsu outboard at 17 mph

Captain Larry Jarboe from Wavewalk Adventures in Key Largo, Florida, drives his “White Knight” workhorse S4 kayak-skiff powered by a 9.8 HP 2-cycle Tohatsu outboard motor, outfitted with a 9″ pitch propeller.
Larry easily gets to a 17 mph speed, which is probably a world record for vessels that are officially designated as kayaks, such as the S4.
He drives sitting in the side-saddle position, similarly to the way that he’s been driving dinghies and other small boats for decades – No stability problems, and no control problems, even in the chop. Most people who drive the S4 and other Wavewalk kayaks / boats do it in the riding position, with a leg on each side of the saddle seat, similarly to the way that Personal Watercraft (PWC a.k.a. jet-ski) drivers operate these vessels.

Generally, 2-stroke outboard motors are lighter than comparable 4-stroke outboards, which makes them more portable.
9″ is the highest pitch for propellers that fit this motor. A propeller with a higher pitch would have probably added some speed to Larry’s record. In any case, 17 mph falls within the upper range of speeds achieved by small, lightweight boats with propellers of such pitch.

 

Practically speaking, this performance coupled with the S4’s capability to carry on board up to three anglers and their fishing gear, puts it on par with Jon boats, skiffs, and even some bass boats.
The S4 is an ultralight car-top boat that can be launched and carried anywhere, as well as paddled in extremely shallow water, and it is most seaworthy. These facts offer its users an advantage that neither conventional nor new boats do.

Note that Larry is a most experience boat driver, and driving such a small craft at such high speeds requires skills that not anyone has. This is to say that we do not recommend such powerful motors for the S4.

Portable boats

Car-topped Wavewalk S4 portable skiff

Introduction

Portable boats have been around for decades, and over time, they have gained many fans, as well as opponents.
This article is an attempt to shed more light on this subject, clarify the basic things that are worth knowing, determine factors that should be given consideration when deciding whether to buy a portable boat or not, and which type, as well as offer information on the latest developments in this field.
Special attention is given to Wavewalk’s Series 4 (S4), a new type of portable boat based on the company’s patented invention. The S4 is good new for those who are looking to get a high performance car-top boat without compromising on stability, comfort and dryness.

The following playlist includes YouTube videos showing the S4 used in different applications and environments, and by different people. One of the videos shows a user uploading an S4 on top of his SUV in under thirty seconds –

 

Make sure to set the YouTube player to watching the videos on this playlist in 1080p HD Hi-Definition.
Use the > button to play the next movie, and the < button to return to the previous one.

Portable boat – Definition

A portable boat is a small boat that’s lightweight enough for a person to upload onto their vehicle’s roof rack in order to transport it this way. A portable boat must also be lightweight enough for one person to carry by hand from their vehicle to the water, and back. In other words, a portable boat is a car-top boat, and vice versa.
This is to say that portable boats do not require transportation by trailer.
But not all trailer-free boats offer the same degree of portability, and some small dinghies, Jon boats and motorized boards may be hauled onto a pickup truck bed, but still be too heavy and bulky for either car topping or easy carrying. Therefore, these small boat are not true portable boats.

Are kayaks portable boats?

Kayaks are not considered to be portable boats despite their being small and typically lightweight enough to be car topped and carried by hand. This is because kayaks don’t lend themselves to effective motorizing, and the same is true for canoes, with the exception for square-stern canoes designed to accommodate a small outboard motor, and be driven on flat water.
Kayaks with built-in electric trolling motors are not portable boats either, since their motors are extremely weak in comparison to the smallest portable outboard gas engines that power boats.
Only a vessel that is both a boat in the full sense of functionality and comfort expected from a motorboat, as well fully portable, may qualify as a portable boat.

Are motorized boards portable boats?

Motorized boards are vessels that offer neither minimal free board nor sufficient load capacity to count as boats. Ironically, some of them are too heavy to be car-topped, which is yet another reason why they may not count as portable boats.

Portability is key

Portability can save you both time and money.
In dollar terms, portability saves you the money that you would have spent on a boat trailer. It’s always good to have a few extra dollars to spend on the boat itself, or on fishing gear.
However, what’s more important is the fact that a portable boat saves you time that you can spent having fun on the water, instead of on the road, driving to or from a boat ramp, as boat ramps are the only places that allow you to launch a boat from a trailer. By the same token, a portable boat saves you waiting time at the boat ramp, waiting for other boat owners to launch their boats, or take them out before you could do it with your own boat. Owning a car-top boat guarantees that you’d never arrive to a boat ramp just to find that the facility had run out of parking space for your vehicle and your boat trailer.
Simply put, portability frees you to launch anywhere you want, and in the case of the S4, even in rocky beaches a.k.a. “Rock Gardens”, as seen in one of the videos featuring in the above playlist.

Rigid Hull

Portable boats include dinghies, Jon boats and square-stern canoes that are small and lightweight enough for car topping. Typically, such boats are made from aluminum (welded or riveted), fiberglass, or plastic resin such as Polyethylene (PE).
A rigid hull offers the advantage of being ready to go on water without spending time and energy on inflating and assembly. As soon as they are out of the water, rigid-hull portable boats (RIB) cannot be car-topped without deflating or disassembling them.
One of the drawbacks of a car-topped boat compared to a boat transported on a trailer is that with a car-top boat, you have to mount the outboard motor on the boat before you launch, and dismount it at the end of the trip, so you could transport it inside your vehicle. This said, an experienced boat owner can mount and dismount a small, namely portable outboard motor within a couple of minutes.

Folding Hull

A folding hull is made from rigid panels attached by flexible sections. Folding a boat makes it take less space, and being less bulky can be an advantage for transportation.
Upon arrival to the launching spot, a folding hull needs to be unfolded, and the boat requires assembly for its seats, transom, etc., which can take up to twenty minutes. Disassembling the boat and folding it back can take a similar time, and altogether, whatever time is gained as a result of not having to launch at a boat ramp thanks to the lack of a trailer, might be wasted on tedious assembly and disassembly work.

Inflatable Boat and Inflatable Pontoons

Inflatable dinghies are made from soft parts, and rigid inflatable boats (RIB) have rigid parts too, which require both assembly and inflation before launching, and disassembly as well as deflation and folding at the end of the trip. These extra activities can take considerable time, even for an experienced user with a good electric pump.
Generally speaking, anglers typically prefer not to fish out of inflatable boats because of the risk of a fishing hook or a knife perforating the hull.

Folding Catamaran

Some small catamarans may be transported on top of a vehicle. These boats feature closed rigid hulls namely pontoons, and their decks are made from sections that can be assembled for boating, and disassembled to allow transportation on a vehicle. Typically, these are sailing catamarans, and they are rarely used for fishing.

Stability, Comfort, and Seaworthiness problems in portable boats

The need to compact the boat so it could be car-topped leads to some portable boat designs lacking in seaworthiness, stability, and comfort.
Canoes feature either round bottomed or flat bottomed hulls. The first is extremely tippy and prone to rolling, especially for a crew of more than one, and the latter is stabler on flat water, but insufficiently stable in choppy water, and in the presence of powerboats’ wakes.
Jon boats, aluminum dinghies and micro skiffs that feature a flat bottom hull are moderately stable on flat water, especially if they are very wide, but they lack the stability required for driving and fishing in moving water.
Jon boats, dinghies and skiffs with a shallow V hull are more stable in moving water, but less stable on flat water.
Inflatable dinghies are very wide, and they are designed to allow driving in moving water, but these boats are not comfortable.

Small, compact boats are not the most comfortable, with the exception of the S4, which features a large-size saddle resembling the saddle seats found in bigger personal watercraft (PWC) sometimes called jet-skis. The S4’s saddle combined its twin-hull design delivers the highest performance in terms of balancing, namely the users’ ability to react instantly, intuitively and effortlessly to changes, as well as actively balance the boat. The S4’s stability combined with the effective balancing capabilities it offers to its users contribute to its exceptional seaworthiness.

Which car-top boat is the most portable?

A boat’s portability is affected mainly by its weight. The S4 weighs a little less than 100 lbs without a motor, and this makes it the lightest boat relatively to its load capacity of over 600 lbs. The S4 also features a fully rigid twin-hull that requires no time-consuming inflation or assembly. Therefore, it is fair to say that the S4 is the world’s most portable boat.

Which portable boat is the most stable?

The Wavewalk S4 is the world’s most stable in its category of portable boats that require neither inflation nor assembly. With its load capacity of over 600 lbs and its saddle seat, this patented boat can carry up to three adult passengers on board, and they may all stand up at the same time  –

Which portable boat is the most seaworthy?

This question is more difficult to answer, since many inflatable and rigid-inflatable dinghies are very wide and designed to go in rough water. However, for a rigid hull portable boat, the Wavewalk S4 is the most seaworthy, since it can go in the ocean in waves up to 5 ft, and its driver can drive it in waves while they stand.

What is the most comfortable portable boat?

Portable boats usually come with simple bench-like seats, or basic swivel seats. Inflatable dinghies offer the driver and sometimes the passengers to sit on its inflatable chambers, or pontoons. Such seating accommodations are not ergonomically designed, which is why they are rather uncomfortable. On top of this, such crude seats do not provide boaters with effective means to o balance themselves, and this balancing deficiency becomes a severe comfort problem in rough water, as well as on longer trips.
The Wavewalk S4 is the only portable boat that features an ergonomically designed PWC saddle-seat. These seats prevent back pain and they offer their users means for quick and efficient reaction to change, as well as easy, natural, intuitive, and highly effective balancing, including whilr going in rough water. S4 driver and passengers can face forward while they ride (straddle) the saddle with a foot in each hull, and they can also face sideways while sitting side-saddle with both feet in one hull. This works not just for small size people as well as for big and heavy guys. The above video playlist includes a movie showing an angler who weighs 330 lbs enjoying driving an S4 and fishing from it while seated side-saddle.

Which portable boat is the most versatile?

The Wavewalk S4 is hands down the most versatile portable boat, due to multiple reasons. These include the fact that the S4 works perfectly as a paddle craft both in a canoeing and kayaking mode. This excellent performance in a human powered mode is unique among motorboats, and it is important not just as an alternative for motorizing in case of emergency, such as engine problems, getting stranded at low tide, etc., but also for going in extremely shallow water (skinny water) where even small and lightweight boats draft too much. This is to say that the S4 is unbeatable as far as mobility is concerned.
The S4 also works both in a solo and tandem mode with up to three adult passengers, and it features a frontal casting deck, as skiffs do.
The S4’s seaworthiness is so good that it can serve as a fun boat for playing in waves. The S4 can also be easily towed by a bigger boat or hauled on board, and together with its generous load capacity, these attributes turn it into a most effective boat tender for yachts and big boats.

Image gallery

The following images offer a quick, condensed glimpse into various aspects of the S4, both as a car-top motorboat and a paddle craft, for leisure and fishing. For a better insight on the S4’s capabilities watch movies in the above playlist.

 

 

Recommended reading: Super Stability – What makes small boats and kayaks more stable »

 

Four people having fun in three Wavewalk S4 skiffs, Key Largo

This is a video that shows people driving their S4 skiffs standing, riding the saddle seat, and sitting side-saddle, with and without a passenger on board, on flat water, in the chop, and in the ocean, in 2 ft waves. No problem whatsoever – Just fun, fun, fun!

 

 

Stability is non-issue in the S4 – It’s neither a problem in the physical sense, namely how the boat reacts to external forces, or in the ergonomic and psychological sense, namely balancing oneself as a driver or a passenger.
Driving is easy and intuitive, with or without a tiller extension, and the boat does what you want it to do, and feels almost like an extension of yourself.
Driving standing feels like skiing, except for the fact that you fully control both speed and direction.
Unlike standing in a Jon boat or on the flat deck of a common skiff, you stand in the S4 with a foot at the bottom of each hull and the saddle serves you as extra support and balancing enabler. In this sense, it’s more like riding a big personal watercraft, a.k.a. jet-ski, waverunner, etc.
A person who had never driven a boat before can drive an S4 standing within a short time on their first trip in it.

Many thanks to Captain Larry Jarboe, who made this possible and so enjoyable 🙂

Starring in this movie are (alphabetically) Dave, Larry, Orit and Yoav.