| Main features | Tonic 23 Fin keel | Tonic 23 Keel and centerboard |
Model | Tonic 23 | Tonic 23 |
Version | Fin keel | Keel and centerboard |
Hull type | Monohull | Monohull |
Category | Coastal cruising sailboat | Coastal cruising sailboat |
Sailboat builder | Jeanneau | Jeanneau |
Sailboat designer | ||
Country | France | France |
Construction | GRP (glass reinforced polyester): - Hull: Single skin fiberglass polyester - Deck: Sandwich balsa fiberglass polyester | GRP (glass reinforced polyester): - Hull: Single skin fiberglass polyester - Deck: Sandwich balsa fiberglass polyester |
Number of hulls built | About 750 | About 750 |
First built hull | 1985 | 1985 |
Last built hull | 1992 | 1992 |
Appendages | Keel : fin without bulb | Centerboard : pivoting centerboard in the keel |
Helm | Single tiller | Single tiller |
Rudder | Single transom hung rudder | Single transom hung rudder |
Unsinkable | No | No |
Trailerable | Yes | Yes |
Former French navigation category | 3 | 3 |
| Main dimensions | Tonic 23 Fin keel | Tonic 23 Keel and centerboard |
Overall length | 24’7.3 m | 24’7.3 m |
Hull length | 22’ 7”6.9 m | 22’ 7”6.9 m |
Waterline length | 20’ 4”6.2 m | 20’ 4”6.2 m |
Beam (width) | 8’ 2”2.5 m | 8’ 2”2.5 m |
Waterline beam (width) | 7’ 2”2.18 m | 7’ 2”2.18 m |
Draft | 3’ 8”1.12 m | 4’ 6”1.38 m |
Draft when appendages up | 2’ 4”0.7 m | |
Mast height from DWL | 38’ 5”11.7 m | 38’ 5”11.7 m |
Fore freeboard | 3’ 4”1.02 m | 3’ 4”1.02 m |
Mid-ship freeboard | 2’ 11”0.88 m | 2’ 11”0.88 m |
Light displacement (MLC) | 2866 lb1300 kg | 2932 lb1330 kg |
Maximum displacement (MLDC) | 4101 lb1860 kg | 4101 lb1860 kg |
Ballast weight | 992 lb450 kg | 1058 lb480 kg |
Ballast type | Cast iron | Cast iron exterior ballast with steel centerboard |
French customs tonnage | 4.48 Tx | 4.48 Tx |
| Rig and sails | Tonic 23 Fin keel | Tonic 23 Keel and centerboard |
Upwind sail area | 316 ft²29.4 m² | 316 ft²29.4 m² |
Downwind sail area | 521 ft²48.4 m² | 521 ft²48.4 m² |
Mainsail area | 157 ft²14.6 m² | 157 ft²14.6 m² |
Genoa area | 159 ft²14.8 m² | 159 ft²14.8 m² |
Solent area | 140 ft²13 m² | 140 ft²13 m² |
Jib area | 86 ft²8 m² | 86 ft²8 m² |
Stormjib area | 43 ft²4 m² | 43 ft²4 m² |
Symmetric spinnaker area | 364 ft²33.8 m² | 364 ft²33.8 m² |
I iFore triangle height (from mast foot to fore stay top attachment) | 23’ 7”7.2 m | 23’ 7”7.2 m |
J iFore triangle base (from mast foot to bottom of forestay) | 7’ 11”2.4 m | 7’ 11”2.4 m |
P iMainsail hoist measurement (from tack to head) | 27’ 11”8.5 m | 27’ 11”8.5 m |
E iMainsail foot measurement (from tack to clew) | 10’3.06 m | 10’3.06 m |
Rigging type | Sloop Marconi fractional | Sloop Marconi fractional |
Mast configuration | Deck stepped mast | Deck stepped mast |
Rotating spars | No | No |
Number of levels of spreaders | 1 | 1 |
Spreaders angle | Swept-back | Swept-back |
Spars construction | Aluminum spars | Aluminum spars |
Standing rigging | Continuous | Continuous |
| Performances | Tonic 23 Fin keel | Tonic 23 Keel and centerboard |
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. | 9.0 | 9.0 |
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. | 266 ft²/T24.68 m²/T | 262 ft²/T24.31 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. | 437 ft²/T40.63 m²/T | 431 ft²/T40.02 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. | 154 | 158 |
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. | 35 % | 36 % |
Wetted area | 133 ft²12.35 m² | 133 ft²12.35 m² |
Righting moment @ 1° iThe righting moment is a moment (torque) that tends to restore a boat to its previous position after heeling. Its value corresponds to the torque needed to heel the boat for this angle.Higher the righting moment is for an angle, greater is the stability. | 192 lb.ft27 kg.m | 192 lb.ft27 kg.m |
Maximum transverse section | 7 ft²0.64 m² | 7 ft²0.64 m² |
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 | 6.04 knots |
| Auxiliary engine | Tonic 23 Fin keel | Tonic 23 Keel and centerboard |
Engine(s) | 1 outboard engine | 1 outboard engine |
Engine(s) power | 10 HP | 10 HP |
| Accommodations and layout | Tonic 23 Fin keel | Tonic 23 Keel and centerboard |
Cockpit | Closed aft cockpit | Closed aft cockpit |
Cabin(s) | 1 | 1 |
Berth(s) | 4 | 4 |
Head(s) | 1 | 1 |
Freshwater tank capacity | 5.3 gal20 liters | 5.3 gal20 liters |
Maximum headroom | 5’ 10”1.77 m | 5’ 10”1.77 m |
Galley headroom | 5’ 5”1.65 m | 5’ 5”1.65 m |
Head headroom | 5’ 6”1.69 m | 5’ 6”1.69 m |
| Saloon | Tonic 23 Fin keel | Tonic 23 Keel and centerboard |
Maximum headroom | 5’ 4”1.62 m | 5’ 4”1.62 m |
Saloon table length | 3’ 5”1.05 m | 3’ 5”1.05 m |
Saloon table width (min./max.) | 1’ 11”0.59 m / 2’ 6”0.76 m | 1’ 11”0.59 m / 2’ 6”0.76 m |
Chart table | 2’ 2”0.68 m x 2’ 1”0.65 m | 2’ 2”0.68 m x 2’ 1”0.65 m |
| Fore cabin | Tonic 23 Fin keel | Tonic 23 Keel and centerboard |
Maximum headroom | 4’ 1”1.24 m | 4’ 1”1.24 m |
Berth length | 6’ 7”2 m | 6’ 7”2 m |
Berth width | 5’ 7”1.7 m | 5’ 7”1.7 m |
| Aft cabin | Tonic 23 Fin keel | Tonic 23 Keel and centerboard |
Berth length | 6’ 2”1.9 m | 6’ 2”1.9 m |
Berth width | 4’ 4”1.32 m | 4’ 4”1.32 m |