Sail area / displacement
How much sail the boat carries for its weight — its power in light air.
- 19.0· Cruiser
How it is worked out
sail area (ft²) ÷ (displacement as ft³ of seawater)^⅔
published upwind sail area
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01_FPY80S_Header — Fountaine Pajot
Summary
Sailing CatamaranSail
- Length overall
- 78.7 ft
- Beam
- 36.4 ft
- Draft
- 6.5 ft
- Displacement
- 171,299 lb
- Sail area (upwind)
- 3,660 ft²
- Cabins
- 4
- Berths
- 8–12
* A standard reference image, not the actual boat — shown to help visualise this model's published dimensions.
Sailing Ratios
Classic yacht-design ratios worked out from the builder's published figures, each shown against the bands designers read it by.
Displacement / length
How heavy the boat is for its waterline length. Lower is lighter and quicker; higher is steadier and roomier.
- not published: waterline length
How it is worked out
displacement (long tons) ÷ (0.01 × waterline length in ft)³
Most builders publish a light displacement. The ratios were defined on a loaded boat, so every boat here reads a little lighter than a surveyor's figure would — all alike, which keeps them comparable.
Tanks
What the builder publishes about how fast, how strong and how much the boat carries.
Fuel and water on one scale: a tank twice the height holds twice as much.
- Fuel634 galWater423 gal
35 gal of water per berth
A figure marked with a quote mark was read from the builder's page. Open it for the exact line, the page and the date.
Dimensions
- LOA
- 78.7 ft (23.99 m)
- Hull length
- 78.7 ft (23.99 m)
- LWL
- —
- Beam
- 36.4 ft (11.09 m)
- Draft (min)
- 6.5 ft (1.99 m)
- Draft (max)
- —
- Air draft
- —
- Displacement
- 171,299 lb (77,700 kg)
- Ballast
- —
- Cabins
- 4
- Heads
- 7–8
- Berths
- 8–12
Sail Plan
- Main sail
- —
- Jib
- —
- Genoa
- —
- Sail area
- 3,660 ft² (340 m²)
- Downwind sail area
- 3,229 ft² (300 m²)
- Rig type
- —
Engine and Tanks
- Engine
- 270–380 hp
- Engine count
- 2
- Engine manufacturer
- —
- Propulsion type
- —
- Fuel capacity
- 634 gal (2,400 L)
- Fresh water capacity
- 423 gal (1,600 L)
- Black water capacity
- —
Construction
- Mast material
- —
- Hull material
- —
- Deck material
- —
- Keel type
- —
- Rudder type
- —
- Steering wheels
- —
Builder's Own Figures
- Living area Owner's cabin
- 33 m2
- Number of Pax Cat D
- 30
- Number of Pax Cat B
- 16
- Fly living area
- 40 m2
- Living space Forward cockpit area/sunpad
- 38 m2
- Main deck area
- 123 m2
- Former name
- Thira 80 — the model's own page is titled FPY 80S; the builder's sailing-catamaran listing and the group's 2025 report still use Thira 80
Figures read fromthe builder's page
Brochure
Download the official FPY 80S brochure (PDF)About Fountaine Pajot
Volume production
French builder of luxury sailing and power catamarans, founded in 1976 near La Rochelle and now part of a group that also owns Dufour Yachts.
Fountaine Pajot marks fifty years in 2026, and the way it has chosen to mark them says something about the yard: rather than write the anniversary itself, it asked owners for their photographs, their videos and their memories aboard, to be gathered into a book on the brand's fifty-year history and sent to all of them. The year is given over to open days at La Rochelle, where the yard is, and to owners' evenings at the boat shows.
Visit brand pageThe Fountaine Pajot Range
Every model Fountaine Pajot publishes, by length — where this one sits in the range.
- FPY 120S116.5 ft
- FPY 80S· this model78.7 ft
- FPY 70S72.2 ft
- FPY 59S61.6 ft
- FP5556.9 ft
- FP5152.2 ft
- FP4847.3 ft
- FP4443.5 ft
- FP4139.7 ft