A semi-displacement hull combines features of both displacement and planing hulls, allowing the yacht to operate efficiently across a range of speeds. This design provides stability and comfort at lower speeds while enabling faster performance as the yacht transitions between displacement and planing modes.
The semi-displacement hull typically features a rounded or gently sloping bow and a wider, flatter stern compared to displacement hulls. This design helps the boat achieve better speed and performance than a full displacement hull while maintaining stability and a smoother ride at lower speeds. The yacht can operate efficiently at cruising speeds without requiring the high speeds necessary for planing.
This hull is often used in yachts intended for extended cruising and long-range travel, where both speed and comfort are important. Semi-displacement hulls offer a versatile solution for those who want the advantages of both hull types, providing a balance between efficient cruising, reasonable speed, and onboard comfort.
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AES Yacht
AES 35M PROJECT NB066114'ft Custom
2024
2 x MAN 800hp
Features: Beach Club, Swim Platform
Tuzla, Istanbul, Turkey
Azimut
ARIA97'ft Magellano 30M
2024
2 x MAN 1,550hp
Features: Swim Platform, Aircon, Stabilisers
Azimut
BELLISSIMA97'ft Magellano 30M
2025
2 x MAN 1,900hp
Azimut
DB97'ft Magellano 30M
2023
2 x MAN 1,900hp
Auckland, Auckland Region, New Zealand
Bluegame
Bluegame BG7474'ft BG74
2024 M/Y noname
2 x Volvo Penta 900hp
Outer Reef Yachts
Outer Reef 700 / 720 Motoryacht72'ft 700 / 720 Motoryacht
2020 M/Y SUERTUDO
2 x John Deere 750hp
Fort Lauderdale Florida United States
Outer Reef Yachts
Outer Reef 700 / 720 Motoryacht70'ft 700 / 720 Motoryacht
2012 M/Y BRAVO!
2 x Caterpillar 503hp
Puerto Montt, Chile
Outer Reef Yachts
Outer Reef 700 / 720 Motoryacht70'ft 700 / 720 Motoryacht
2012 M/Y ERMA
2 x Caterpillar 705hp
Port St. Lucie Florida United States
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Admiral
GECO181'ft Admiral S-Force 55
2020
2 x Caterpillar 1,901hp
Features: Beach Club
Athens, Attica Region, Greece
Admiral Yachts
SILVER STAR I181'ft Admiral S-Force 55
2023
2 x Caterpillar 1,926hp
Features: Helipad, Beach Club
Marina di Carrara, Tuscany, Italy
1 Not for sale to US residents while in US waters
2 Approx Price Conversion
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Check out the award winning and finalist Semi-Displacement yachts and models.
Winner
Best Naval Architecture: Semi-Displacement or Planing Motor Yachts
Boat International Design & Innovation Awards 2024
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Nothing, they are both planing designs and capable of speeds above 20 knots. However, a deep or modified Vee design differs in several ways from a semi-displacement. A semi-displacement hull is more about fast, smooth cruising than out-an-out speed. A small keel is usually included, to help slow, 10knot-12knot, handling and stability. A deep, sharp forefoot produces less lift than a planing hull's entry but really cuts into the waves to smooth the ride.
Often, but not always. A semi-displacement yacht can be fast, but because its focus is on smooth, albeit swift, cruising, it is powered to deliver around 20knot-25 knots rather than, say, 30 knots. A good balanced engine installation such as this has the power to kick on but is also efficient at 12knots-20 knots.
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