Optio Swing keel

Sailboat specifications

The Optio is a 29’6” (8.99m) dayboat designed by Berret Racoupeau Yachts Design (France). She is built since 2014 by Wauquiez (France). The Swing keel version adopts an appendage configuration without compromise between draft and performance. The only drawbacks are the space taken inside and the price of the system...

The Optio is as well listed, on Boat-Specs.com, in Fin keel version (see all the versions compared).

Optio's main features

Model: Optio
Version: Swing keel
Hull type: Monohull
Category: Dayboat
Sailboat builder: Wauquiez
Sailboat designer: Berret Racoupeau Yachts Design
Country: France
Construction: GRP (glass reinforced polyester):
- Hull: Sandwich balsa E-glass vinylester (vacuum infusion)
- Deck: Sandwich balsa E-glass vinylester (vacuum infusion)
First built hull: 2014
Last built hull: Still in production
Appendages: Lifting keel : swing keel
Helm: Single tiller
Rudder: Twin spade rudders
Unsinkable: No
Trailerable: Yes
EC design category iThe CE design category indicates the ability to cope with certain weather conditions (the sailboat is designed for these conditions) A: Wind < force 9, Waves < 10m B: Wind < force 8, Waves < 8m C: Wind < force 6, Waves < 4m D: Wind < force 4, Waves < 0,5m: C
Standard public price ex. VAT (indicative only): About
94 500 €
(2020)

Optio's main dimensions

Hull length: 29’ 6”8.99 m
Waterline length: 28’ 1”8.57 m
Beam (width): 8’ 4”2.54 m
Draft: 7’ 2”2.2 m
Draft when appendages up: 3’ 4”1 m
Mast height from D_WL: 43’ 4”13.2 m
Light displacement (M_LC): 4409 lb2000 kg
Ballast weight: 1984 lb900 kg
Ballast type: Cast iron

Optio's rig and sails

Upwind sail area: 468 ft²43.5 m²
Downwind sail area: 1039 ft²96.5 m²
Mainsail area: 285 ft²26.5 m²
Jib area: 183 ft²17 m²
Asymmetric spinnaker area: 753 ft²70 m²
Code 0 area: 495 ft²46 m²
I iFore triangle height (from mast foot to fore stay top attachment): 34’ 11”10.65 m
J iFore triangle base (from mast foot to bottom of forestay): 11’ 10”3.6 m
P iMainsail hoist measurement (from tack to head): 35’ 11”10.95 m
E iMainsail foot measurement (from tack to clew): 11’ 6”3.5 m
Rigging type: Sloop Marconi (square top mainsail) 9/10
Mast configuration: Deck stepped mast
Rotating spars: No
Number of levels of spreaders: 2
Spreaders angle: Swept-back
Spars construction: Aluminum spars
Standing rigging: Single-strand (ROD) discontinuous

Optio's performances

Upwind sail area to displacement iThe ratio sail area to displacement is obtained by dividing the sail area by the boat's displaced volume to the power two-thirds. The ratio sail area to displacement can be used to compare the relative sail plan of different sailboats no matter what their size. Upwind: under 18 the ratio indicates a cruise oriented sailboat with limited performances especially in light wind, while over 25 it indicates a fast sailboat.: 295 ft²/T27.4 m²/T
Downwind sail area to displacement iThe ratio sail area to displacement is obtained by dividing the sail area by the boat's displaced volume to the power two-thirds. The ratio sail area to displacement can be used to compare the relative sail plan of different sailboats no matter what their size.: 654 ft²/T60.79 m²/T
Displacement-length ratio (DLR) iThe Displacement Length Ratio (DLR) is a figure that points out the boat's weight compared to its waterline length. The DLR is obtained by dividing the boat's displacement in tons by the cube of one one-hundredth of the waterline length (in feet). The DLR can be used to compare the relative mass of different sailboats no matter what their length: a DLR less than 180 is indicative of a really light sailboat (race boat made for planning), while a DLR greater than 300 is indicative of a heavy cruising sailboat.: 90
Ballast ratio iThe Ballast ratio is an indicator of stability; it is obtained by dividing the boat's displacement by the mass of the ballast. Since the stability depends also of the hull shapes and the position of the center of gravity, only the boats with similar ballast arrangements and hull shapes should be compared. The higher the ballast ratio is, the greater is the stability.: 45 %
Critical hull speed iAs a ship moves in the water, it creates standing waves that oppose its movement. This effect increases dramatically the resistance when the boat reaches a speed-length ratio (speed-length ratio is the ratio between the speed in knots and the square root of the waterline length in feet) of about 1.2 (corresponding to a Froude Number of 0.35) . This very sharp rise in resistance, between speed-length ratio of 1.2 to 1.5, is insurmountable for heavy sailboats and so becomes an apparent barrier. This leads to the concept of "hull speed". The hull speed is obtained by multiplying the square root of the waterline length (in feet) by 1.34.: 7.11 knots