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Diamond EF66 Catamaran
- Length
- 21 m68 ft
- Delivery
- 2026
- Builder
- Diamond Yachts
- Guests
- 10 in 5 cabins
- Cruising
- 10 kn
- Building in
- Fort Lauderdale, USA
- Asking price
- approx. $2,600,000
About Diamond EF66
Buying the Diamond EF66 while she is still in build means choosing her rather than accepting her. Diamond Yachts is building this power catamaran to order for 2026 delivery, and the cabin layout and much of the specification are still open to the next owner's decisions rather than fixed on a line. That is what ownership looks like before she exists: a series of choices, not an inspection.
Build and provenance
She is a catamaran, not a monohull, which is the decision that shapes everything else about her: two hulls set 9.8 metres apart at the beam, the width that gives a boat this length her interior volume. Diamond Yachts builds to individual specification rather than to a fixed configuration, so the next owner is buying a platform first and a finished layout second. At 68 feet, the Diamond EF66 is still on order rather than afloat.
Layout and accommodation
The builder offers multiple interior layouts on the EF66, and the next owner chooses among them before she is finished: up to five cabins for ten guests, with crew space still to be settled as part of the build. The stern doubles as a with a behind it, so the and the garage are already fixed points that the interior layouts are built around.
Performance and engineering
Two Cummins QSB6.7 diesels give her a 10-knot cruise and a 15-knot top speed, catamaran numbers that trade outright pace for a stable, level ride across the twin hulls. She carries 396 gallons of water, tankage that matters on a boat an owner is more likely to keep out for days than for an afternoon.
On deck and at anchor
At anchor, the stern will see the most use, with the keeping the clear of gear underway. The adds a second entertaining deck above it, so a build-to-order buyer is really specifying two outdoor living spaces rather than one.
Where she lies and how to see her
The Diamond EF66 is being finished for delivery in Fort Lauderdale. Boatcrowd will arrange a viewing of her build and be there with you, and once an offer is accepted, survey and sea trial follow before she is handed over.
Full Specifications
- Length
- 68' / 21 m
- Beam
- 9.8 m
- Guests
- 10
- Cabins
- 5
- Engines
- 2 x Cummins QSB6.7
- Fuel
- Diesel
- Cruising Speed
- 10 kn
- Top Speed
- 15 kn
- Delivery
- 2026
- Hull
- Catamaran
- Style
- Flybridge
- Building in
- Fort Lauderdale
- Country
- USA
Build
- Hull Material
- Fibreglass
Performance
- Fuel Capacity
- 6,000 litres
- Fresh Water
- 1,499 litres
Features & Amenities
- On deck
- Beach Club
- Also aboard
- Tender Garage Flybridge
Plans
Where She Sits in the Market
Per metre, she is below the band median.
| Group | Listings | Asking price | Per metre |
|---|---|---|---|
| This yacht | $2.6m | $124,000 | |
| Yachts of 20 to 24 m | 214 | $3.3m | $150,000 |
| Built 2023 to 2029 | 563 | $12.3m | $393,000 |
Each group is the priced yachts for sale with Boatcrowd, her included, and every group figure is a median. Prices quoted in other currencies are converted at today's rate.
Buying Costs
- Survey
- A buyer normally commissions a condition survey, and a sea trial, once an offer is accepted and before the sale becomes unconditional. The cost depends on her size and on where she is lifted, and it is the buyer who appoints the surveyor.
- Registration and flag
- She will be registered on a flag of the buyer's choosing, which carries its own fees and its own survey and crew requirements. Where the yacht is owned through a company, the shares rather than the vessel may change hands, which changes what is payable.
- VAT and import
- Whether VAT is due, and where, depends on the yacht's current status, her flag, the buyer's residency and where she is delivered. Where the seller has stated her VAT status, it is shown with the asking price on her page, and it is confirmed in writing before an offer is made.
- Running costs
- Crew, berthing, insurance, class and annual maintenance continue from the day she is yours. A yacht that is also chartered earns against them, and we will set out what her season has actually returned before you commit.
Estimated running costs for a yacht of her size are set out on the size page: What a yacht of 20 to 24 m costs to run.
Questions about Diamond EF66
When will Diamond EF66 be delivered?
She is in build at Diamond Yachts in Fort Lauderdale, USA, with delivery given as 2026. The year on an in-build listing is the delivery year, never a build year, and the specification shown is the one the yard has committed to.
Is the asking price of Diamond EF66 negotiable?
USD 2,600,000 is her asking price. Offers are put to the owner: when you are ready, we put yours forward and agree terms.
What will Diamond EF66 cost to run?
Crew, berthing, insurance, class and annual maintenance continue from the day she is yours. Estimated running costs for a yacht of her size are set out on the size page: What a yacht of 20 to 24 m costs to run.
Details are given in good faith and are not contractual. Offered subject to prior sale, price change or withdrawal without notice.
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