
D66
66′-3″ overall · 10–12.5 knots (estimated)
Estimated range: 3,000 nm at 9 knots with 10% reserve
Explore the Dauntless lineup, featured arrangements, brochures and the story behind the FD2 hull.
← Explore the Overing Yachts collectionThe Explorer’s EXPLORER.
From a manageable 66-foot platform to a 140-foot expedition yacht, the Dauntless family is built around fast-displacement hull forms and individually tailored arrangements.


66′-3″ overall · 10–12.5 knots (estimated)
Estimated range: 3,000 nm at 9 knots with 10% reserve
75′-1″ overall · 10–13.5 knots
Range: 3,000 nm at 10 knots
100′-0″ overall · 25′-6″ beam · 7′-6″ draft
2 × CAT C18 ACERT · 715 HP each10,000 gal fuel · approx. 190 LT displacementLloyd’s 100A1 · MCA LY2 classed
A 108-foot quad-deck explorer in the Dauntless model family.
Five owner and guest staterooms
A 115-foot quad-deck explorer in the Dauntless model family.
Five owner and guest staterooms · Beach Club · 121′-11″ overall with platform2 × CAT C32 · 1,450 BHP each6,100 nm at 10 knots · 3,800 nm at 12 knotsView the Dauntless 115 layouts ↗
Five staterooms · Beach Club · 130′-5″ overall with optional platform
Range: 6,100 nm at 10 knots
Six staterooms · Beach Club · 142′-0″ overall including optional platform
Estimated range: 6,000 nm at 10 knots
Five staterooms · Beach Club · 141′-8″ overall including platform
Range: 6,000 nm at 10 knotsReview model arrangements, construction details and performance particulars in the current brochures.



The FD2 grew out of Overing’s original fast-displacement hull program, begun in 1998. In 2006–2007, Jon Overing developed the first FD2 hull for a 135-foot ABS-classed project. The objective was to preserve the original FD hull’s blue-water seakeeping, comfort and efficiency while reducing draft for greater versatility in shallow cruising grounds.
Extensive tank testing at Krylov in St. Petersburg included runs into, with and diagonally across seas, along with roll-decay testing. In Sea State 4 at 12 knots, the test record reported pitch, heave and vertical-acceleration amplitudes differing by no more than 8% across the tested displacement range.
In 2020, Overing developed a new 125-foot Trideck design for a repeat client, creating the opportunity to develop a second FD2 hull. The yacht was built at Cheoy Lee to Lloyd’s class. This base design became the catalyst for our new Dauntless 125 five-stateroom Explorer. Starting with this proven 125-foot design, we upgraded all systems and equipment to Dauntless specifications, then completely redesigned the layouts in a contemporary, mainstream arrangement optimized for the American market. The revamped 125 is an ideal addition to the Dauntless family. Joining the D125 is a new, larger six-stateroom version developed from our proven 135 FD2 hull. With similar styling, the new D135 fills another niche in the sub-500-IGT market.
Rounding out the FD2 lineup is the D140 Aft House Explorer. The proven 135 FD2 hull was the logical starting point; adding a midbody frame and stern frame achieved the desired length while preserving its performance and seakeeping qualities. This new design created the opportunity to redefine the aft-house explorer in a contemporary style, with features not previously seen in this type of explorer. The D140 offers a five-stateroom arrangement and approximately 6,000 nautical miles of range at 10 knots. With the optional higher-horsepower engine package, both the D135 and D140 can cruise in the 15–16-knot range.
Figures reflect current brochure particulars; estimated values, optional platforms and final arrangements vary by design and build specification.