When it comes to performance yachts, the difference is in the details. The ECLIPSE 505 Shadow was engineered to deliver a ride unlike anything else in its class, combining advanced hull technology, high-performance power, and impressive fuel efficiency to create a vessel that’s fast, smooth, and exceptionally capable.
Southern Boating Magazine calls the 505 Shadow “art-on-the-water,” delivering both elegance and cutting-edge performance.
The SVVT Hull
At the heart of the 505 Shadow’s performance is its patented SVVT (Stepped-Vee Ventilated Tunnel) hull. Known for revolutionizing performance hulls, Peters’ designs have powered everything from race boats to luxury yachts, and the SVVT hull is no exception.
So, what makes the SVVT hull special?
In simple terms, the SVVT hull uses a stepped, ventilated tunnel system to reduce drag and increase lift. This unique shape introduces air under the hull, reducing surface friction, which allows the boat to plane faster, run more efficiently, and offer a smoother, more stable ride—even at high speeds or in rougher water conditions.

Benefits of the SVVT Hull:
- Increased fuel efficiency
- Faster planing and acceleration
- Enhanced stability at speed
- Softer, drier ride in challenging conditions
Power Meets Precision: Triple Mercury 600s

To complement its advanced hull, the ECLIPSE 505 Shadow is equipped with triple Mercury Verado 600hp outboards, delivering the perfect balance of raw power and refined performance.
With this setup, the 505 Shadow reaches impressive numbers:
- Top Speed: 58 MPH
- Best Cruising Speed: 41.6 MPH
- Smooth, quiet operation with exceptional throttle response. The combination of Mercury’s industry-leading technology and the SVVT hull results in a yacht that performs at the highest level without sacrificing comfort.
Fuel Efficiency Where It Counts
Performance is not only about speed—it’s about how efficiently you can reach your destination. Thanks to the SVVT hull design and intelligent engineering, the ECLIPSE 505 Shadow offers excellent fuel economy at cruising speeds.
According to recent performance data:
Best Cruise Efficiency: 41.6 MPH at 4600 RPM with fuel burn at 81 GPH (Gallons Per Hour).
This translates to optimal range and efficiency, allowing owners to cover more distance comfortably and confidently.
View the full ECLIPSE performance specifications here.
The ECLIPSE 505 Shadow Experience
The 505 Shadow isn’t just about numbers—it’s about the complete experience. Whether you’re exploring coastal waters, island-hopping, or chasing the horizon, this yacht delivers the speed, stability, and fuel efficiency to do it all, wrapped in sleek, modern design.
As Southern Boating Magazine puts it, the 505 Shadow’s “owner-centric design ensures it stands alone in the express cruiser realm,” bringing advanced design and refined comfort together — creating a vessel you’ll enjoy for a lifetime.
Ready to experience the 505 Shadow difference?
The 505 Shadow is now available for private showings and sea trials. If you’re looking for a sleek, high-performance express cruiser, this is your opportunity.
For details, visit www.ECLIPSE-Yachts.com or contact HMY Yacht Sales at (561) 448-8500.
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