Sail area / displacement
How much sail the boat carries for its weight — its power in light air.
- not published: sail area
How it is worked out
sail area (ft²) ÷ (displacement as ft³ of seawater)^⅔

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ORC-57-QAPTUR-scaled — ORC Catamarans
* A standard reference image, not the actual boat — shown to help visualise this model's published dimensions.
Classic yacht-design ratios worked out from the builder's published figures, each shown against the bands designers read it by.
How much sail the boat carries for its weight — its power in light air.
sail area (ft²) ÷ (displacement as ft³ of seawater)^⅔
How heavy the boat is for its waterline length. Lower is lighter and quicker; higher is steadier and roomier.
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.
Figures read fromocean-rider-catamarans.com/en/orc-57/· Key dataread 10/18/2026
2 drawings from the builder's page: general arrangement, sail plan, profile.

ORC-57-plan-int-standard-amenagement-1 — ORC Catamarans

ORC-57-plan-standard-4-cabines — ORC Catamarans
Semi-custom
Lorient builder of fast, light cruising catamarans since 1995, now part of the Grand Large Yachting group — two tiller-steered boats, the 52-foot ORC 52.2 by Barreau-Neuman and the 18.4-metre ORC 57 flagship by Marc Lombard.
ORC says that since its inception in 1995 its shipyard has developed a reputed know-how in building fast cruising catamarans, with a philosophy based on simplicity. The yard holds that simplicity is a timeless value that offers nothing but benefits, and that over the years it has become a real 'art de vivre' for its customers, who sail on all the seas and oceans of the globe. Its stated aim is to give owners the maximum of pleasure — a word, it notes, that shares its roots with the French 'plaisance', yachting. Its motto sums up the approach: simple by nature, fast by design, pleasant by definition.
Visit brand pageEvery model ORC Catamarans publishes, by length — where this one sits in the range.
Boats this boat's designers also drew, for other builders too. Credits are grouped only where the names clearly agree, however each builder spelled them; an unclear one is left out.
McConaghy Boats
LOA: 17.94 m
ICE Yachts
LOA: 18.6 m
Outremer
LOA: 18.28 m