You want to sail - actually sail, with the engines off and a watch schedule - and you want the people you love aboard for weeks at a time without anyone feeling like they are living in a corridor. Those two ambitions usually fight each other. The Lagoon Seventy 7 is the boat Lagoon built to prove they do not have to.
At 78'2" with a 36'1" beam and 3,609 square feet of upwind sail area, the Seventy 7 was the yacht that established what a Lagoon flagship could be. It has since passed the flagship role to the Eighty 2, which makes the Seventy 7 a Lagoon Heritage model - and, for a buyer looking at the brokerage market rather than an order book, one of the most interesting sailing catamarans available at this size.
Who the Seventy 7 Is For
This is a boat for the owner who has already done the 50 and probably the 60, and who has concluded that privacy is the thing that actually determines whether a long cruise stays enjoyable. Lagoon designed her explicitly around that idea. Their own description of the boat is that owners and captain can each live at their own pace, in complete privacy - which is a design brief, not a slogan, and you can trace it through every layout decision on the boat.
She suits the owner planning in seasons: a summer in the Mediterranean, a winter in the Caribbean, family aboard for stretches, professional crew running the boat throughout. She is also a serious charter platform, which is why the six-cabin version exists.
Design and Provenance
VPLP Design and Marc Van Peteghem drew the Seventy 7, and Van Peteghem has been unusually clear about the thinking behind it: cruising is a succession of moments spent with the people we love, and the architecture had to work across family, friends and charter scenarios while also absorbing the presence of crew that a yacht this size requires.
The industry agreed. The Seventy 7 collected a run of sailing-yacht and innovation awards through 2017, across both the American and Asian marine press.
Layout and Accommodation
Lagoon built the Seventy 7 with three galley positions - galley up, forward, and aft - and the choice genuinely changes the boat. Galley up and forward galley are offered in four- and five-cabin plans, with the forward galley also available in six cabins; the aft galley comes in four- and five-cabin versions. Owner-operators tend toward the forward galley, which keeps service out of the main social space, while crewed and charter programmes often prefer the aft galley.
The owner's suite is the piece people remember. It combines a private terrace with infinite sea views, a large walk-in closet, and a dedicated lounging area - a retreat with its own outdoor space rather than a cabin with a good view. Guest cabins are properly appointed with their own heads, and the crew accommodation is separate, which is the detail that makes the whole privacy argument work in practice.
Deck and Living Spaces
Lagoon's phrase for the Seventy 7's exterior is "reinvented space," and what they mean is that the exterior and interior living areas were designed as one continuous plan rather than a saloon with a cockpit attached. The fluid layout gives you the full sense of the 36'1" beam and lets people move without negotiating around each other.
The flybridge carries the helm and can be specified four ways: standard, with sun baths, with loose furniture for a reconfigurable deck, or with a jacuzzi. Putting the helm up top is what keeps the main deck social - the person on watch has a commanding view over the rig, and the saloon and cockpit stay entirely given over to living.
Sailing Character
This is a sailing catamaran, and the sail plan is the specification that matters most. The standard upwind sail area is 335 m² (3,609 sq ft), from a genoa on a roller furler of 130 m² (1,399 sq ft) and the mainsail. Options extend the wardrobe considerably: a square-top mainsail of 207 m² (2,228 sq ft), a staysail of 75.67 m² (814 sq ft), a Code 0 of 208 m² (2,238 sq ft), and an asymmetric spinnaker of 448 m² (4,820 sq ft).
That is a genuinely deep sail wardrobe, and it is there because a 61-tonne catamaran needs power in light air. Specified with the square-top main and a Code 0, the Seventy 7 keeps moving in the conditions where cruising catamarans most often end up motoring - which is the single biggest quality-of-life difference between a boat you sail and a boat you motor with sails on it.
Under power she carries twin Volvo D4-175 diesels at 175 HP each, for a maximum of 11 knots under power and a 9-10 knot cruise under sail or power. Those are modest engines by displacement, and deliberately so: they are there for harbours, calms and manoeuvring, not to substitute for the rig. The 6'4" draft is deep for a catamaran but shallow for anything else at 78 feet, and she carries a CE Category A offshore certification for 14 people.
Specifications
| Specification | Detail |
|---|---|
| Overall Length | 78'2" (23.84 m) |
| Beam | 36'1" (11.00 m) |
| Draft | 6'4" (1.95 m) |
| Displacement (Unladen) | 135,937 lbs (61,660 kg) |
| Engines | Twin Volvo D4-175 (2 x 175 HP) |
| Max Speed | 11 knots (under power) |
| Cruise Speed | 9-10 knots (under sail/power) |
| Fuel Capacity | 740 gal (2,800 L) |
| Water Capacity | 423 gal (1,600 L) |
| Cabins / Heads | 4-6 Cabins / 4-6 Heads + Crew |
Living With the Boat
The Seventy 7 is a crewed yacht. That is not a soft recommendation - it is what the boat is. Handling 3,609 square feet of upwind sail area on a 61-tonne platform is not shorthanded work, and Lagoon built separate crew accommodation in precisely because they expected a professional captain aboard. Plan on at least a captain, and realistically a captain and one more, if you intend to move on a schedule.
The 36'1" beam is the practical constraint on where she lives, requiring an end tie, a T-head or a properly sized megayacht berth in most marinas - confirm that in your home cruising grounds before anything else. The 6'4" draft is manageable in most cruising areas but does rule out the thinnest Bahamian banks a shoal-draft power cat would walk over.
For maintenance, the catamaran layout is a real advantage: two separate machinery spaces with clear access around each engine, and a rig that can be worked from a wide, stable deck.
Honest Trade-Offs
Buying a Heritage model means buying on the brokerage market rather than configuring from scratch, so the layout, galley position and sail wardrobe of the specific hull matter enormously - two Seventy 7s can be very different boats. Look hard at whether the square-top main and Code 0 are aboard.
She is also unambiguously a big-boat commitment: crew, berth, and the operational discipline that goes with 78 feet, and 9-10 knots of cruise means passages are planned in days. But the counter-argument is straightforward. This is an award-winning VPLP design, with the accommodation and privacy of a yacht considerably larger, now trading as a mature, proven design rather than a first-of-class. For a buyer who wants a flagship sailing catamaran with real racing-derived design lineage behind it, the Seventy 7 remains one of the strongest arguments on the water.