One frame
18'6" length, 8'0" beam, aluminum chassis, and aluminum deck.
Rowkai Sharkbite Pontoon
One boat. Many weekends.
A modular pontoon concept with one frame, one deck, one furniture system, and bolt-on accessories instead of twenty different layouts.
The platform
Think Wrangler or Bronco, not a pontoon catalog.
Sharkbite is being shaped around one base architecture. The battery size and bolt-on accessories can change. The core boat stays familiar, serviceable, and easier to manufacture.
Two pontoons
HDPE pontoons for a durable, outdoor-minded foundation.
One system
A single propulsion module area designed for launch flexibility and future development.
Base architecture
Everything bolts to the deck.
The goal is a simple pontoon platform that avoids the inventory problem created by endless layouts, colors, furniture sets, consoles, and powertrain combinations.
18'6" Length
8'0" Beam
2 HDPE pontoons
Aluminum chassis and deck
HDPE furniture bases
Snap-on premium cushions
Single propulsion module
Bolt-on accessories
Accessories, not models
Fishing, family, adventure, cabin. Same boat underneath.
Instead of separate fishing, cruising, and party models, Sharkbite would use standardized mounting points for accessories that can be added, removed, serviced, or upgraded.
Fishing Kit
Rod holders, fish finder, livewell, trolling motor mount.
Family Kit
Table, extra cupholders, bimini, cooler.
Adventure Kit
Paddleboard rack, kayak mounts, bike rack.
Luxury Kit
Refrigerator, better stereo, RGB lighting, wireless chargers.
Cabin Kit
Solar canopy, inverter upgrade, coffee station.
Planning economics
A direct pontoon target, with the uncertainty stated clearly.
These are planning estimates at meaningful volume, not final pricing. Actual costs depend on engineering, supplier pricing, validation, certification, warranty data, labor, and production scale.
Rounded from a component-level planning model to allow manufacturing variability.
A concept target for a direct-to-consumer Sharkbite configuration.
Needed to fund engineering, marketing, service, warranty, overhead, and future development.
ComponentEstimated cost
HDPE pontoons$1,300
Aluminum chassis$900
Aluminum deck$650
Railings and gates$500
Captain chair and lounge benches$1,080
Helm, steering, wiring, and lighting$600
20 kWh LFP battery$1,900
Generator, engine, inverter, propulsion unit$4,200
Cooling, exhaust, enclosure, hardware$1,300
Labor and warranty reserve$1,800
Rounded planning factory cost~$14,000
Propulsion path
The power system is the hardest part.
A purpose-built series hybrid pontoon could become compelling at scale, but it carries the highest engineering, validation, and certification risk. The practical path is to design the chassis so it can accept a conventional outboard first and a future hybrid module later.
Launch path
Accept a conventional outboard so the boat can reach customers while powertrain development continues.
Future module
Series-hybrid propulsion can become the differentiator once validated.
Same deck
The platform should not need a full redesign if the propulsion module changes.
Rowkai Sharkbite
One hull. One deck. Bolt-on life.
Sharkbite extends the Rowkai idea from warm water to open water: simple outdoor products, repairable architecture, and fewer unnecessary variations.