Etap 23iL Lifting keel

Sailboat specifications

The Etap 23iL is a 22’6” (6.85m) cruising sailboat designed by Jac de Ridder Yacht Design (Netherlands). She was built between 1995 and 1999 by Etap (Belgium) with 110 hulls completed. The Lifting keel version features an appendage configuration without compromise between draft and performance. Only drawback: some space is taken inside by the keel.

Etap 23iL's main features

Model: Etap 23iL
Version: Lifting keel
Hull type: Monohull
Category: Cruising sailboat
Sailboat builder: Etap
Sailboat designer: Jac de Ridder Yacht Design
Country: Belgium
Construction: GRP (glass reinforced polyester):
Sandwich foam fiberglass polyester
Number of hulls built: 110
First built hull: 1995
Last built hull: 1999
Appendages: Lifting keel : retractable L-shaped keel (with bulb)
Helm: Single tiller
Rudder: Single transom hung rudder
Unsinkable: Yes
Trailerable: Yes
Former French navigation category: 3
Standard public price ex. VAT (indicative only): N/A €

Etap 23iL's main dimensions

Overall length: 25’ 6”7.76 m
Hull length: 22’ 6”6.85 m
Waterline length: 20’ 4”6.2 m
Beam (width): 8’ 2”2.49 m
Draft: 4’ 10”1.45 m
Draft when appendages up: 2’ 4”0.7 m
Mast height from D_WL: 34’ 1”10.4 m
Light displacement (M_LC): 3417 lb1550 kg
Ballast weight: 1036 lb470 kg
Ballast type: Cast iron
French customs tonnage: 3.99 Tx

Etap 23iL's rig and sails

Upwind sail area: 311 ft²28.9 m²
Downwind sail area: 446 ft²41.4 m²
Mainsail area: 151 ft²14 m²
Genoa area: 160 ft²14.9 m²
Solent area: 110 ft²10.2 m²
Jib area: 62 ft²5.75 m²
Stormjib area: 28 ft²2.6 m²
Asymmetric spinnaker area: 295 ft²27.4 m²
I iFore triangle height (from mast foot to fore stay top attachment): 23’ 10”7.25 m
J iFore triangle base (from mast foot to bottom of forestay): 8’ 1”2.48 m
P iMainsail hoist measurement (from tack to head): 26’ 1”7.95 m
E iMainsail foot measurement (from tack to clew): 9’2.75 m
Rigging type: Sloop Marconi 7/8
Mast configuration: Deck stepped mast
Rotating spars: No
Number of levels of spreaders: 1
Spreaders angle: Swept-back
Spars construction: Aluminum spars
Standing rigging: 1x19 strand wire continuous

Etap 23iL's performances

IOR rating iIOR, or International Offshore Rule, was a measurement rule system used internationally for ocean racing. It allows boats of different sizes and designs to race each other fairly. Therefore, by comparing these values, we can have an indication of the relative speed of 2 boats.: 16.5
HN (French rating) iHN or "Handicap Nationale" is an empirical rating system used in France allowing various monohulls, of different sizes and designs, to race each other fairly. It is particularly suitable for cruiser and cruiser-racer. Therefore, by comparing these values, we can have an indication of the relative speed of 2 boats.: 7.5
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.: 232 ft²/T21.58 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.: 333 ft²/T30.91 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.: 184
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.: 30 %
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.: 6.04 knots