KAYAKS DESIGNED TO PERFORM BETTER IN A BROADER RANGE OF CONDITIONS AND APPLICATIONS
21 miles in a kayak is a long distance, especially on lake Tahoe, which is often windy due to its 6,000 ft elevation. Anyone who wants to try paddling such a distance on that lake should choose their kayak carefully. Most paddlers capable of such a feat would opt for an extra-long and extra-narrow sit-in touring kayak, a.k.a. sea-kayak, outfitted with a rudder system, without which tracking would be hard, and maybe even impossible.
But Edwin Warner simply took his Wavewalk 700 twin-hull kayak to lake Tahoe, and crossed it from its west shore to its east shore and back in 5.5 hours. Edwin weighs about 250 lbs, and he’s not a racing kayaker. In fact, he is a kayak fisherman, whose preferred activity is crabbing in the San Francisco bay. Edwin didn’t even consider outfitting his W700 with a rudder, and no Wavewalk paddler ever did such a thing, since it’s totally unnecessary, because Wavewalk kayaks track well naturally, due to the fact that they are catamarans, and their users can relocate their center of gravity (CG) fore and aft, and thus effectively control the way the kayak reacts to wind coming from any direction, and neutralize this unwanted factor.
It didn’t occur to Edwin that fishing kayaks are not meant to go over such distances, since typically, they are sluggish and hard to paddle, and he didn’t stop to think that maybe tandem kayak with a load capacity of over 500 lbs is not exactly the optimal vessel for crossing such distances in windy conditions.
Edwin simply trusted his W700, because he’s been fishing with it in the Pacific ocean for years. He didn’t bother to get an extra-lightweight carbon-fiber paddle for this trip, because he knew that his sturdy Wavewalk paddle fits his W700, and he trusted it.
Edwin paddled this 21 mile distance in 5.5 hours, that is close to 3.82 mph in average – Not a bad time for a heavy, middle aged guy in a fishing kayak that’s less than 13 ft long. If Edwin had paddled this distance in a traditional 20 ft extra-long racing or touring kayak, his bad back would have forced him to turn around and cut his trip short.
So how is this story relevant to kayak design? It’s about the envelope of performance of the patented twin-hull kayaks made by Wavewalk – A single Wavewalk kayak can serve two large-size anglers or hunters in a long trip, where both will be seated or standing at will. They’d be able to carry on board all the gear they would need for such a trip, and progress at a good pace. And if needed, they could easily outfit their W700 with an outboard motor, and drive anywhere they want, regardless of winds and currents.
How do common mono-hull sit-in and sit-on-top (SOT) kayaks compare to this? Well, they don’t, really, since they under-perform the W700 in almost everything.
I sum, not all kayaks are equal, and Wavewalk’s patented kayaks outperform traditional, common sit-in and SOT kayaks.
Common kayaks, namely SOT and sit-in, feature two pointy ends, in the front (bow) and at the rear (stern), and a seat that’s pretty much locked in one place, at the middle of the deck, due to balance and hydrodynamic issues.
Outboard gas motors work best when mounted at the stern, and mounting such a motor on a common kayak inevitably means that the distance between the driver and the motor will be too big to allow for easy access to the motor’s controls, and it would make steering either impossible or extremely awkward and practically unsafe.
The Wright brothers did got get their patent on an airplane invention, but on a system for controlling an airplane. Indeed, when driving an any vehicle, be it an airplane, a land vehicle, or a vessel, maintaining good control is key for the driver and passengers’ safety and well being, and this is why all SOT and sit-in kayaks propelled by outboard motors look so bad on videos. Such videos may be fun to watch, but overall, they fail to convince a reasonable person that a common kayak powered by an outboard motor is a a feasible idea, let alone a good one that has merit.
This said, the proliferation of such videos, and the concept of a microskiff board becoming mainstream, point to a paradigm shift in the kayak fishing market, as neither paddling, pedaling or even electric trolling motors can satisfy anglers’ basic need to go on longer trips, in water and weather conditions that are more challenging than perfectly flat water, and simply enjoy driving a small and seaworthy motorized kayak, because fun matters.
So far, the only kayaks that work for real with outboard motors, and provide the safety, control, and fun that sensible users deserve and expect are the Wavewalk 500, Wavewalk 700, and the king of motor kayak skiffs – the Wavewalk S4, which is in fact more seaworthy than many boats are, and is fun to drive even in rough seas.
For over a decade, this website has been following and documenting developments in the design and usage of small and lightweight watercraft, from kayaks and canoes to micro skiffs and Jon boats.
In recent years, the emphasis has been increasingly on motorized boats, mainly thanks to the introduction of Wavewalk’s 700 series, and shortly after, its Series 4, nicknamed the S4. Despite their impressive performance under power, these two motorboats are still designated as kayaks, and indeed both paddle well. In fact, the W700 is still used mostly for solo and tandem kayaking and kayak fishing.
Seaworthy small boats
When small craft are concerned, the adjective “seaworthy” evokes either inflatable dinghies or personal watercraft (PWC). Neither kayaks nor micro skiffs come to mind, simply because for different reasons, these small craft are typically not meant to travel in the ocean, especially in the chop, and offshore. When people go in the ocean with a kayak or a microskiff, it is typically in good weather, close to shore, and in areas that are free from fast motorboats’ wakes, which can destabilize the passengers and even the boat itself. As soon as the wind starts blowing, the users of these small craft seek shelter in more protected waters.
Since it was launched in 2017, the Wavewalk’s S4 has proven itself to be a seaworthy and dependable micro skiff, despite the fact that it is smaller and lighter than all other boats and motorized boards in this group of small craft. This accomplishment is due to the fact that the S4 combines a catamaran’s super stable twin-null with the saddle seat of high personal watercraft (PWC) which are small, high performance, and seaworthy as well.
The S4 is seaworthy in the full sense of the word, at least when small craft are concerned. Running a 10 HP motor, it can be driven in the chop at full throttle, even if the driver is standing up –
But the S4 also delivers unrivaled maneuverability in mangrove creeks and tunnels –
Time and again, technology and design have shown that smaller can be better, and the S4 is yet another proof that thinking outside the box can work in the design of small boats, and lead to improved performance in multiple applications and environments.
The link between stability and speed in boats is very strong, and nowadays most people are aware of the fact that thanks to their improved stability, multi-hulls are faster than comparable mono-hulls under sail as well as motorized.
Simply, boats differ by the volume of their hulls, and there are two ways to design a boat –
In the mono-hull form, most of the hull’s volume is concentrated along its center line, where it contributes nothing to lateral stability.
In the twin-hull (a.k.a. catamaran) form, the boat’s volume is split in two, and each half is distributed along the boat’s sides, where it works effectively to increase the sides’ buoyancy and thus the boat’s overall lateral stability.
In other words, when stability is concerned, the mono-hull form is wasteful, and the twin-hull form is efficient.
Balancing capability – the ergonomic factor that enhances stability
When it comes to micronautics, namely the science and art of designing very small and lightweight watercraft, the boat’s physical stability is not the only thing that matters, and ergonomics play an important role as well –
In order to better understand this principle, consider small fast vehicles that have no stability of their own, such as bicycles and motorcycles – Without a biker to balance them while in motion or standing in place, these vehicles would fall on their side. This said, such vehicles offer excellent means for their operator to balance them, and this balancing capability is enough to allow these vehicles to move at high speeds and over rugged terrain.
A similar, although reduced effect can be observed in other small, high-performance vehicles such as ATVs and snowmobiles, which offer their operator and passengers excellent means to balance themselves, and by doing so enhance the stability of their vehicle as well. Personal watercraft (PWC) are the aquatic version of these powerful and fast land vehicles.
So what do all the above mentioned small vehicles have in common in design and ergonomic terms? -They all feature a saddle type of seat. Typically, bikes and motorbikes feature higher saddles than ATVs, snowmobiles and PWC, but this is not always the case, since some bikes and motorbikes feature lower saddles.
In any case, saddle seats differ from other seats by the fact that their user rides them with a leg on each side, and does not sit on them with their legs in front of them. Ergonomically speaking, this allows the user to react to lateral changes intuitively, more quickly, and more effectively, and thus balance themselves and their small vehicle more efficiently.
The successful combination of the twin-hull (catamaran) and the saddle seat
The patented Wavewalk small watercraft (kayak, canoe, skiff, etc.) is unique in the sense that it combines a twin-hull (catamaran form) with a saddle seat that’s similar to the ones featuring in large-size PWC. Thus, Wavewalk kayaks are more stable, and they an be better balanced than any other kayak, canoe, or other small vessel of comparable size. This overall stability, namely the combined static stability of the boat and dynamic stability of its users, allows for unrivaled performance in speed terms, as well as in seaworthiness.
In order to get a better feeling for what this stability advantage translates to in speed terms, watch the following movies –
1. High speed motor kayak driven at high speed in the ocean chop
2. Speed comparison of S4 powered by a 5 HP vs 9.8 HP – flat water
This video offers a good opportunity to observe the S4 going at high speed on flat water, from the standpoint of another S4 driver going at a pretty good speed as well
3. The world speed record for vessels designated as kayaks
This video shows Captain Larry Jarboe, the current holder of the world speed record for motorized kayaks, driving his Wavewalk S4 at 17 mph (27 kmh) on flat water. Note that Captain Jarboe drives his motor kayak seated in the side-saddle position, and not in the more stable riding position. This is to say that from an ergonomic standpoint, he does not feel a need to take full advantage of the S4 design.
Stability, Speed, and Seaworthiness
A vessel designated as a kayak does not necessarily have to be a lame, unstable, uncomfortable, and slow one. It can be a fast, comfortable, and most seaworthy one, as demonstrated here. This performance level opens new possibilities for using these “kayaks” for offshore fishing, rescue and engineering, as well as boat tenders and fun boats.
Such a braod performance envelope is unique to the Wavewalk S4, which on top of these motorized applications, can serve as a wonderful paddle craft, both in a kayaking and canoeing mode, for one, two, or three passengers, seated and/or standing.
Car top transportation
And last but not least, unlike other fast and stable motorboats, the Wavewalk S4 does not require transportation by trailer. At 98 lbs (45 kg) without the motor, it can be car-topped by one person on the roof rack of any vehicle, carried to the beach, and launched practically anywhere.
A portable boat is a small, lightweight boat that can be easily transported on the roof of a common passenger vehicle, and carried by hand to the water and back from it by one or two persons. Portable boats are also referred to as car-top boats.
By definition, a portable boat does not require a trailer for transportation.
But when portability is concerned, not all trailer-free boats are equal, and some boats (e.g. small dinghies and Jon boats) and motorized boards are small and lightweight enough to be hauled onto a pickup truck bed, but too heavy and bulky for car topping and easy carrying, which is why these vessels are not considered as portable boats.
Kayaks are small vessels that are typically lightweight enough to be car topped and carried by hand, but since kayaks don’t lend themselves to effective motorizing, they are not considered as boats, and the same is true for most canoes, with the exception of very wide, square-stern canoes that can be driven on flat water with a small outboard gas motor.
Kayaks equipped with electric trolling motors are still considered to be kayaks and not portable boats, similarly to bicycles that are not designated as motorcycles even when outfitted with small motors.
A motorized board labeled as a skiff for a solo user would not qualify as a portable boat even if in the future a lightweight enough version of it is produced, because it lacks the load capacity and free board that are expected from a boat – even a small one.
In sum, in order for a vessel to qualify as a portable boat, if must be both a fully functional boat and fully portable.
Why is portability important?
Portability has advantages both in economic and time terms.
In dollar terms, portability offers you to save the money that you would have had to spend on a boat trailer, and spend it on the boat itself, and on other useful equipment such as electronics, fishing gear, etc.
More importantly, a portable boat makes you gain productive, fun time on the water that you would have otherwise spent driving to or from a boat ramp, which is the only place where you can launch a boat from a trailer. A portable boat also saves you time waiting at a boat ramp to launch your boat, and waiting for others to launch their boats or take them out before you can take out your own boat. Not having to depend on boat ramps guarantees that you’d never drive to a boat ramp just to find that there’s no more parking space left there for your vehicle and trailer.
At its highest level, portability gives you the freedom to launch anywhere you want, as seen in this video –
Types of portable boats
Some dinghies, Jon boats and square-stern canoes are small and lightweight enough to be car topped. They are made from aluminum, fiber reinforced plastic (FRP) – typically fiberglass, or polymer resin (plastic) such as Polyethylene.
Having a rigid hull means that these boats are ready to be driven without additional work such as inflating and/or assembly, and once the trip is over, they can be car-topped without deflating and/or disassembly.
The only difference between a car-top boat and a boat transported on a trailer is that a car-top boat requires mounting the outboard motor on it before launching, and dismounting it after the end of the trip. For an experienced boater, mounting the motor and dismounting it takes a couple of minutes.
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.
Some inflatable dinghies are made solely from soft parts, and others, namely rigid-inflatable boats, or RIB, include rigid components as well. This requires inflation and assembly before launching, and disassembly plus folding upon return from the trip. These activities take time, even if you’re experienced and equipped with a good electric pump.
Inflatable boats are not very popular among anglers, who prefer to avoid fishing from a boat whose hull might be perforated by a fishing hook, a knife, or other sharp object that anglers typically carry on board.
Some small catamarans feature rigid hulls (pontoons, actually), and they can be disassembled and transported in sections, on top of a car roof. Typically, such catamarans are used for sailing, and they are rarely used for fishing and hunting.
Other issues with portable boats
Aside from the problems that some portable boats present as far as assembly and disassembly time is concerned, some designs leave much to be desired in terms of seaworthiness, stability, and comfort –
Canoes are either round bottomed or flat bottomed. The first type of hull is extremely tippy, especially for a crew of more than one passenger, while the second type is moderately stable on flat water, and unstable on moving water.
Portable Jon boats and rigid dinghies that feature a flat bottom are moderately stable on flat water, but not stable enough for trips or fishing in moving water, or in the presence of wakes from big motorboats.
Portable Jon boats and dinghies that feature a shallow V hull perform better in moving water, but less so on flat water.
Portable Inflatable dinghies are very wide, and designed to go in moving water, but these boats are not comfortable.
What is the most portable boat?
At slightly less than 100 lbs, the Wavewalk S4 is the world’s most lightweight boat for a crew of more than two adult passengers, and it also features a fully rigid twin-hull that requires neither inflation nor assembly. These two facts combined make the S4 the world’s most portable boat.
What is the most stable portable boat?
For a boat that requires neither inflation nor assembly, the Wavewalk S4 is the world’s most stable in its class. With a load capacity of over 600 lbs and a saddle seat that’s similar to the seat of large-size high performance personal watercraft (PWC), this patented boat can carry up to three adult passengers on board – all of them standing up.
What is the most seaworthy portable boat?
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.
What is the most comfortable portable boat?
Typically, portable boats feature simple bench-like seats, or basic swivel seats. None of these seating accommodations is particularly comfortable, and they don’t offer good means for a user to balance themselves.
In contrast, the Wavewalk S4 features a saddle seat that prevents back pain, and allows for easy, natural, intuitive, and fully effective balancing, even in rough water. Both the driver and passengers of the S4 can ride (straddle) the saddle while facing forward, or sit side-saddle while facing sideways. This is true even for a big and heavy person who weighs more than 300 lbs.
What is the most versatile portable boat?
Hands down, the most versatile portable boat is the Wavewalk S4, since it works perfectly in a non-motorized mode, both with canoe and kayak paddles, in a solo and tandem mode, and it features a frontal casting deck, as skiffs do.
Being most seaworthy, the S4 can serve as a perfect tender for a yacht or a big motorboat, and it can be effectively towed behind the mother ship, as well as hauled on board.