Live scan proofDepth, structure and cast-zone context
Reserve for $10
Launch reservation
$10 today unlocks 25% off the planned $1299 launch price.
3D Sonar Reconstruction
Turn underwater structure into a readable 3D view.
Real freshwater structure is messy: wood, grass, rock, bottom transitions and fish all share the same water below the surface. This prototype workflow shows how sonar returns can become a point cloud and an interactive terrain model with bass and structure context.
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Real underwater sceneSubmerged wood, rock and a largemouth bass can share the same scan area. -
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Sonar point cloudSensor returns turn underwater terrain into measurable spatial context. -
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Readable 3D reconstructionTerrain and structure are organized into a view an angler can use before casting.
Interactive prototype
Watch the sonar point cloud build, then inspect the matching 3D terrain context.
Scan radius20 m
Use caseFreshwater
WorkflowDrop, cruise, decide
Launch price$1299
Pre-order offer$10 = 25% off
About Us
Engineers, anglers and field testers building a smarter way to read freshwater.
Team Story
Kastave began on the bank, not in a lab: a passionate angler and a sonar expert saw the same gap between underwater science and real fishing decisions. Chester knew how to read water; William knew how to read echoes, yet still struggled to find fish in practice. Together with Leo's engineering depth, they built Kastave to help anglers find fish faster.
Kastave began on the bank, not in a lab.
Chester has always been passionate about fishing. He knew how to read a spot, where fish were likely to move, and how small changes in timing, depth, and position could decide whether a session ended with a catch or nothing at all.
William, on the other hand, was a sonar expert. With a PhD background in underwater acoustic sensing, he understood signals, echoes, and what happens beneath the surface from a technical point of view. But when Chester took him fishing, something funny kept happening.
They would fish the same water, often from nearby spots, under the same weather and conditions. Chester could find fish and get bites, while William repeatedly failed to catch anything. For William, it was frustrating. He understood the science of seeing underwater, yet in real fishing, he still could not reliably know where the fish were.
That contrast became the starting point of Kastave.
William realized that professional sonar knowledge was still too far away from everyday fishing decisions. Chester realized that many anglers face the same problem: they spend hours guessing where fish are, relying on experience, luck, and trial and error.
Together, they asked a simple question:
Can we build something that helps anglers find fish faster?
To turn that idea into a real product, they brought in Leo, a mechanical engineering PhD from PSU. With William's sonar expertise, Chester's fishing experience, and Leo's engineering ability, Kastave was created to make underwater information easier to understand and more useful for every fishing enthusiast.
- Name
- William Liu
- Hometown
- Shenzhen
- Occupation
- Kastave CEO
- Favourite Method / Rig
- Drop Shot Fishing; Jigging; Trolling
- Favorite fish species
- Smallmouth Bass; Walleye
- Name
- Chester
- Hometown
- Shenzhen
- Occupation
- Kastave COO
- Favourite Method / Rig
- Lure Search Fishing; Texas Rig Fishing; Bottom Fishing
- Favorite fish species
- Largemouth Bass; Carp
- Name
- Leo
- Hometown
- Shenzhen
- Occupation
- Mechanical Engineering
- Favourite Method / Rig
- Trolling; Float Fishing; Fly Fishing
- Favorite fish species
- Trout; Catfish
Field Test Notes
Evidence from real scouting sessions.
Five documented scenarios from bank, bridge, shoreline and kayak testing, with clear proof boundaries.
View the complete field test archive
Setup felt natural before the first cast.
Observed
Kastave staged beside rods and tackle without changing the normal preparation sequence.
- What this proves
- Fits into a normal bank-fishing setup.
- Does not prove
- Final production durability or catch results.
Watching the scan on my phone made decisions faster.
Observed
Live scan context showed where the water changed and helped narrow the next target zone.
- What this proves
- Phone-guided scanning can shorten scouting decisions.
- Does not prove
- A guaranteed personal-best catch.
Useful from a kayak or shoreline setup.
Observed
The portable workflow provided quick context beside a kayak without installing a full boat system.
- What this proves
- Works as portable scouting support around small craft.
- Does not prove
- Final mounting workflow for every kayak.
Launching from the bank was straightforward.
Observed
The prototype entered shallow shoreline water and began checking reachable water before the first cast.
- What this proves
- Can be placed from shallow shoreline water.
- Does not prove
- Every bank angle or current condition.
It revealed structure I would normally guess at.
Observed
A scouting pass around bridge edges and deeper drops provided clearer structure context before casting.
- What this proves
- Useful around visible structure and depth changes.
- Does not prove
- Exact fish location or species identification.
Free waitlist
Join the free waitlist.
No payment required. Tell us a little about how you fish, then continue to the full questionnaire for launch updates and early product research.
- Free to join
- No payment required
- Short angler intake
Reserve Kastave for $10 today.
The $10 reservation holds your pre-order access and unlocks 25% off the planned $1299 launch price when final purchase opens.
- $10 pre-order reservation today
- 25% off the $1299 final launch price
- Refundable reservation with no automatic $1299 charge
- Email confirmation after payment
- Your final purchase invitation will be sent by email later
Pre-order checkout
Reserve Kastave for $10
$10 reserves your pre-order offer and unlocks 25% off the planned $1299 final product price. This is not the final product purchase.
You are charged $10 today only. Kastave will not automatically charge the $1299 final product price.
Production timeline
Pilot production planned for 2027
Reserve $10 with Stripe
Reserve $10 with PayPal
After the $10 reservation payment, confirmation is sent by email. Final purchase and fulfillment happen later, and only after you choose to complete the final checkout.
Pre-order FAQ
What does the $10 reservation include?
Your $10 pre-order reservation unlocks a 25% discount toward the planned $1299 final product price when final purchase opens.
Will I be charged the final product price automatically?
No. The $10 reservation is not the final product purchase. We will email you before final checkout, and you can decide whether to complete the order.
Is the $10 reservation refundable?
Yes. The reservation is refundable before final payment collection if you change your mind before launch.
What is the final product price?
The planned final launch price is $1299. Customers who reserve for $10 during this campaign can receive 25% off when final purchase opens.
How is Kastave different from 2D fish finders?
Traditional 2D sonar shows signals that anglers still need to interpret. Kastave is designed to turn underwater readings into a clearer 3D structure view for fishing decisions.
What fishing situations is Kastave built for?
Kastave is built for anglers searching banks, seawalls, canals, rocky shorelines, grass edges, drop-offs, submerged wood, and other structure-focused water.
Does Kastave guarantee bigger fish?
No device can guarantee a catch. Kastave helps you read structure more clearly so you can choose better casting targets and reduce blind searching.
Does Kastave need a phone app?
Yes. The intended workflow pairs the device with a mobile app for 3D scan viewing, saved maps, structure points, water conditions and trip history.
Can I use Kastave from the bank, kayak, or small boat?
Yes. Kastave is designed as a portable scan system for bank anglers, kayak anglers, and small-boat users who want structure information without a complex installed setup.
When will the first batch ship?
We are currently validating field performance, app workflow, and production planning. Early customers will receive launch updates before final purchase and fulfillment.
Where will you ship?
Shipping regions will be confirmed before final checkout based on logistics, taxes, and service coverage. Early customers will receive updates as launch details are finalized.
Which payment methods can I use for the reservation?
You can reserve through Stripe or PayPal using the checkout buttons on this page.
How can I contact Kastave?
Email us at info@kastave.com.