Description

🔒 ENCLOSED BOW ADVANTAGE

Exclusive to the Viper Sovereign 400

Unlike open-bow inflatable catamarans, the Viper Sovereign 400 features a fully enclosed forward section, delivering a noticeably drier, safer, and more refined boating experience.

☑ Dramatically reduced spray and splash
☑ Increased passenger comfort on longer runs
☑ Improved protection for children and gear
☑ Greater confidence in wind and chop
☑ A more solid, “boat-like” ride feel

Ideal for families, offshore transitions, and buyers upgrading from open inflatable designs.

👉 Build My Sovereign 400
📞 Speak With a Viper Specialist | +61 2 4335 1603

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🛠️ BUILT TO OUTLAST. BUILT TO PERFORM.

Sovereign 400 Construction

The Sovereign 400 is built to the same uncompromising standards as the entire Viper Series — using premium materials engineered for Australian conditions.

Construction Highlights:

• 1.2mm, 2000D German-engineered Valmex® PVC
• Thermo-welded seams — no glue, no weak points
• Four overpressure relief valves
• Heavy-duty closed aluminium transom
• Hard non-skid Valmex air deck floor (9 PSI)

Designed to withstand UV, heat, abrasion, saltwater, and impact — this is a long-term ownership boat, not a disposable inflatable.

👉 Secure Your Build Slot

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📦 WHAT’S INCLUDED — STANDARD PACKAGE

Everything you need comes standard with the Sovereign 400.

☑ Light Grey / Black boat colour
☑ Full bimini included
☑ 2 × aluminium seats with storage bags
☑ Enclosed bow configuration (Sovereign model)
☑ 4 × overpressure relief valves
☑ Closed-scupper aluminium transom
☑ Oars, rowlocks, manual pump & repair kit
☑ Carry / storage bag
☑ 2 × rod holder mount kits (factory installed)
☑ Valmex non-skid hard air deck floor

No hidden essentials. No stripped-back base model.

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⚡ TRUE CATAMARAN PERFORMANCE

The Sovereign 400 retains the dual-tube catamaran hull that defines the Viper Series — now paired with an enclosed bow for greater confidence at speed.

☑ Outstanding lateral stability at rest
☑ Reduced drag and efficient planing
☑ Smooth, predictable handling
☑ Safer boarding and beach launches
☑ Excellent load balance for passengers and gear

Result: A more composed, confident ride — especially in chop.

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📐 SPECIFICATIONS — VIPER SOVEREIGN 400

🌊 DESIGNED FOR REAL AUSTRALIAN BOATING

The Viper Sovereign 400 is purpose-built for:

• Family boating & coastal cruising
• Fishing & spearfishing
• Beach launching & island hopping
• Longer runs in wind and chop
• Buyers wanting a drier alternative to open inflatables

This is not a light-duty tender.
It’s a serious enclosed inflatable sports boat.

👉 Order Your Sovereign 400

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⭐ WHY OWNERS CHOOSE THE SOVEREIGN 400

☑ All the performance of the open-bow Viper Cat
☑ Added comfort from enclosed bow design
☑ Premium Valmex welded construction
☑ Stable, predictable handling for families
☑ Built to order — not mass produced
☑ Backed by a 5-Year Warranty

👉 Start Your Sovereign Build

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🔍 VIPER CAT 400 vs VIPER SOVEREIGN 400

Best For:
• Viper Cat 400: Open access, sport use
• Sovereign 400: Drier ride, family comfort, offshore confidence

👉 Upgrade to the Sovereign 400

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🧭 WHICH ONE SHOULD YOU CHOOSE?

Choose the Viper Cat 400 if you want:
• Open-bow access
• Traditional inflatable layout
• Sport-focused use

Choose the Viper Sovereign 400 if you want:
• A noticeably drier, more comfortable ride
• Extra protection for passengers and gear
• Greater confidence in wind and chop
• A more refined, premium experience

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🏆 THE TAKEAWAY

The Viper Sovereign 400 delivers everything owners love about the Viper Cat — with the added comfort, safety, and confidence of an enclosed bow.

For buyers upgrading from open inflatables, this is the natural next step.

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💳 FLEXIBLE BUILD & PAYMENT OPTIONS

☑ Secure your build with a 50% deposit
☑ Pay in full anytime before delivery
☑ Secure SSL checkout
☑ Finance options available

🔐 Secure Checkout • 🛡 5-Year Warranty • 🚚 Free AU Shipping

👉 Reserve Your Sovereign 400 Today

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🚚 SHIPPING & WARRANTY

☑ Free Australia-wide shipping
☑ Approx. 4-week build & delivery
☑ 5-Year boat warranty
☑ 3 + 2 year Hidea outboard warranty

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📞 NEED HELP CHOOSING YOUR SETUP?

📍 Avoca Beach, NSW
📞 +61 2 4335 1603
📧 [email protected]
🕘 Mon–Sat | 9am–5pm

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🔒 IMPORTANT — CUSTOM BUILD NOTICE

This product is custom-built to order. A Consumer Purchase Agreement must be acknowledged and signed before production begins. An electronic Docusign document will be sent via email on placing your boat order.

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🔒 Secure SSL Checkout | 🇦🇺 Australian Owned & Operated | ⭐ Rated 5★ by Customers | 🛡 5-Year Warranty | 💳 Trusted Payments (Visa • Mastercard • American Express • Afterpay • Google Pay • Apple Pay • Klarna • Alipay • Phone Orders • Deposit New Boat Builds)