TMAerowave Viper 400 Sovereign
Australia's flagship inflatable catamaran. Built to handle the abuse that ends weekends for owners of thinner hulls.
5.0· 20 Google reviewsIn stock now3 available · Arctic Grey/Black full package
No build wait. Other colours and Hypalon are built to order.
+ ask about your private owner's price
In-stock boat: no build wait, paid in full at checkout. Custom boats aren't refundable for change of mind; your Australian Consumer Law rights always apply. Payment terms
Charged in USD — the price you see is the price your card is charged. No conversion markup from us.
One boat. Ten summers of weekends.
Cheap inflatables are everywhere right now, and plenty look great in the photos. The real test comes later: harsh Australian sun, beach landings, a branch hidden under the water. Fabric thickness, welded seams and the right transom decide whether your weekend goes ahead.
Every Viper is built for that test, so the boat you unpack is the boat you're still launching years from now.
Compare the total cost, not just the price tag: delivery to your door is included in every price on this page.
Pay for it once. Then just go boating.
Your firm delivered price
Your Viper 400 Sovereign, priced to your door.
Leave your details and we'll email your firm price delivered to your country — freight and import costs worked out, in writing — with the full spec sheet. Then we'll be in touch to talk it through.
- Firm delivered price, in writing
- Full spec sheet by email
- Ask about your private owner's price
Owners of this boat also add
One-click add — ships free with your boat.
Why the Viper costs a little more — and pays you back for over a decade
No one else in this class is building on this fabric. Every Viper hull is 1500 GSM / 1.2 mm VALMEX® Heavy Plus — a third more material in every tube than the 1100 decitex / 0.9 mm fabric this size of boat is usually built from.
That's why we can do what the others can't: a 5 + 2 year hull warranty. And it's why your Viper is designed to last 10–12 years of real weekends, not two or three summers.
A cheaper 0.9 mm boat might cost less today. Realistically, in Australian sun, it's a 3–5 year boat — so you'd buy it twice in the time you own one of ours. You're not paying more for the same thing. You're paying for one build instead of two.
One boat. One build. It just works.
The full numbers
Aerowave Viper 400 Sovereign — Full Package
What's included in the Full Package
15 items- 01Premium Catamaran Hull Platform
Twin-hull stability for a more confidence-inspiring ride and reduced roll at rest.
- 02German VALMEX® 7321 Heavy Plus 1.2mm fabric
Commercial-grade fabric built for abrasion, UV exposure and long-term ownership confidence.
- 038–10 PSI high-pressure hard AirDeck floor
Use the lithium pump only for the first minute, until the floor reaches approximately 2–2.5 PSI. Then switch to the supplied manual pump to reach the recommended 8–10 PSI. Do not use the lithium pump for final AirDeck pressure; it will not bring the floor to 8–10 PSI. The lithium pump is suitable for the boat tubes, where the over-inflation valves control excess pressure.
- 044 × Over-Inflation Safety Valves (one per chamber)
Standard on every boat — premium pressure protection when heat causes air pressure to rise. Most competitors don't include these.
- 05Full Bimini Top Kit
Shade and comfort already sorted for longer days on the water — choose light grey or black at checkout.
- 06LockPro Plus wheel kit — fitted during production
The stainless mounting plates are secured to the transom with eight lugs, and the wheel storage bag is included.
- 072 × Removable Aluminium Bench Seats
Flexible passenger and fishing layout options.
- 082× padded under-seat storage bags
Two bags are included only with orders placed from 15 August 2026 onwards. Orders placed before 15 August 2026 include 1× under-seat storage bag. One bag carries Easy Inflatables branding; the other is identical in size, material and quality — just unbranded.
- 09Premium Aluminium Grilled Transom
Stronger rear mounting platform for improved engine support and durability — no plastic components.
- 102 × heavy-duty rod holders + 2 × deck-mounted rod-holder bases
Bases glued to the deck by our production team; clip-in heavy-duty rod holders included — fishing-ready straight out of the bag.
- 1122 PSI 12V lithium electric air pump with built-in battery
Cordless inflation to full working pressure — no car engine, no compressor required.
- 12Grilled deck drainage system
No plastic components. Plastic bung drains trap prawn heads, weed and grit; the grilled deck flushes clear every time.
- 13Heavy-Duty Rope Holder
Fitted rope holder on the bow for mooring, towing and retrieval.
- 14CE compliance plate and HIN fitted to the aluminium transom
Supplied with the manufacturer’s Statement of Conformity. Registration requirements vary by state — check with your state authority.
- 151 × purpose-sized Aerowave carry bag — included
One primary carry bag sized for the enclosed-bow Sovereign 400 hull, removable air deck, seats, pumps, repair kit and supplied accessories.
Factory-to-door quality control and compliance checks
Before your boat leaves the factory, we run an eight-point quality control and compliance check against your exact order — fabric, seams, transom, inflation, fittings and pack list — so what arrives at your address is what you paid for.
Build sheet lock
Factory confirms hull colour, length, transom spec, floor type and fittings against your order before fabric is cut.
Fabric spec verification
We cross-check the VALMEX® GSM and thickness rating against the signed-off sample so the hull matches what was promised.
Seam and weld inspection
Every main seam, transom joint and chamber bond is pressure-tested and visually inspected before full inflation.
Transom and fitting stress check
Transom height, backing plate and motor-mount geometry are verified against the rated HP max for your model.
Chamber inflation test
Each air chamber is inflated to operating PSI and held to confirm no creep, leaks or valve faults before the boat is signed off.
Pre-shipment photo pack
We receive factory photos of your actual boat before it leaves, so any issue is caught before freight, not after.
Final pack-list audit
Seats, bags, Bimini, pump and accessories are checked off against your configured package list before the carton seals.
Door-step arrival check
You inspect on delivery. If anything does not match the compliance pack, we sort it — no arguments, no run-around.
Build, price, checkout.
Aerowave Viper 400 Sovereign — pick your package, choose your colours, pay securely.
Your price, delivered to your door — freight included.
We email the full PDF quote (spec, freight, finance, WavePay) to your inbox in under 60 seconds. No spam — one quote, one follow-up.
Talk to Adam or Gary for a written price with freight and import charges clearly separated for your country.
See it from every angle.
Every detail, engineered to last
From the reinforced aluminium transom to the heat-welded seams and premium 1500 GSM / 1.2 mm VALMEX® fabric tubes — this is what sets the Viper apart.
Strong boats, built really tough — from bow to transom.
- Thicker hull, more protection. 1.2 mm VALMEX® Heavy Plus (1500 GSM) is about a third thicker than common 1100 GSM / 0.9 mm boats. Hit a submerged branch or rock and the heavier fabric is far more likely to shrug it off than a lighter hull.
- Commercial-spec transom. Every Aerowave transom is built to commercial specification, made to carry heavier four-stroke outboards, not just recreational ratings.
- Made to last. Heat-welded seams, reinforced bow and 10–12 years of life from premium VALMEX with normal care.
If you want a really strong boat, you've come to the right place.
Frequently asked questions
What makes the Sovereign different from a standard inflatable boat?
Its twin-hull catamaran design focuses on stability at rest, while the 8-10 PSI maximum high-pressure floor gives a firmer, more rigid feel underfoot. It is also supplied as a complete flagship package.
Why is the Sovereign still positioned as the flagship Viper 400?
The Sovereign is the flagship enclosed-bow model. The new show-special price gives buyers a stronger value entry point while still delivering the more refined layout, premium feel and top Viper ownership package.
What motor suits the Viper 400 Sovereign?
The Sovereign is rated up to 40HP 4-stroke short shaft, with 30HP 4-stroke short shaft recommended for many buyers depending on load and use.
Why does the 8-10 PSI maximum air deck matter?
A higher-pressure air deck gives a firmer, more confidence-inspiring underfoot feel when standing, fishing, loading gear or moving around on board.
Is delivery included?
For Australian customers, standard delivery is included; a A$300 fee may apply to remote postcodes, shown in the postcode check above. For international customers, freight and import charges depend on your destination. See our international delivery page for your country’s terms, or request a written quote for your exact freight cost.
What makes it better for Australian conditions?
Premium German VALMEX® 7321 Heavy Plus 1.2mm commercial-grade fabric, thermo-welded seams, over-inflation safety valves, strong support and a practical package spec all help suit real Australian use.
Can I get the Sovereign with aluminium floorboards instead of the air deck?
Yes — from 15 June 2026 the Sovereign 400 is available with marine-grade aluminium floorboards and an inflatable keel as a +$500 upgrade. The standard build still ships with the 8-10 PSI maximum high-pressure air deck (77kg). The aluminium floorboard + keel option adds rigidity for serious fishing, standing casting and heavier loads, and brings the all-up boat weight to roughly 92kg. Choose your preferred floor on the product page before adding to cart — if no option is selected, the standard air deck is supplied.
How do I inflate the hard AirDeck floor to 8–10 PSI?
Use the lithium pump only for the first minute, until the floor reaches approximately 2–2.5 PSI. Then change to the supplied manual pump to reach the recommended 8–10 PSI. Do not use the lithium pump to try to reach final AirDeck pressure; it will not work. The lithium pump is suitable for the boat tubes, and their over-inflation valves control excess pressure.
Why is a Viper slightly heavier?
We use 1500 GSM / 1.2 mm VALMEX® Heavy Plus fabric and a reinforced 4 mm aluminium transom. The extra strength helps the hull withstand underwater knocks and keeps a four-stroke outboard securely supported.
How do I anchor a Viper?
Attach the anchor line to the front of the bow bridle with a suitable stainless-steel shackle. There is also a D-ring beneath the bow skirt. Stow a folding scud-style anchor, chain and rope in a black milk-crate style container — water drains straight through it, which is ideal with wet line and rope aboard.
Are the catamarans stable? What are they like in choppy conditions?
Yes — extremely stable. A catamaran sits on top of the water rather than cutting through it, which makes it a steadier, more stable platform. In choppy conditions it will feel a little bouncier than a monohull, as a monohull's V-hull cuts through the water. If you're regularly out in heavy chop, we'd recommend a monohull instead. For most conditions, the catamaran is the more stable and compact choice.
Check us before you trust us.
Every review is on Google, not on our page
We don't paste quotes onto our site. Open our Google Business Profile and read every review, with the reviewer's profile and the date it was left.
A young business, an honest count
We've been selling Aerowave boats in Australia since 2023. The review count is small because we are — every one of them is a real customer, and every one can pick up the phone to the same small team.
Ask us the hard questions
Call Gary on +61 2 4335 1603. Ask how the hull is built, how it's shipped, what goes wrong and what the warranty actually covers. Straight answers, no script.