Delphia 24 OD

Sailboat specifications

The Delphia 24 OD is a 24’ (7.32m) multiple crew sport keel boat designed by Andrzej Skrzat (Poland). She was built between 2006 and 2017 by Delphia Yachts (Poland).

Delphia 24 OD's main features

Model: Delphia 24 OD
Hull type: Monohull
Category: Multiple crew sport keel boat
Sailboat builder: Delphia Yachts
Sailboat designer: Andrzej Skrzat
Country: Poland
Construction: GRP (glass reinforced polyester):
- Hull: Single skin fiberglass polyester (vacuum infusion)
- Deck: Sandwich PVC fiberglass polyester (vacuum infusion)
First built hull: 2006
Last built hull: 2017
Appendages: Lifting keel : retractable fin without bulb
Helm: Single tiller
Rudder: Single transom hung rudder
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
22 100 €
(2016)

Delphia 24 OD's main dimensions

Overall length: 25’ 4”7.7 m
Hull length: 24’7.32 m
Waterline length: 23’ 5”7.13 m
Beam (width): 8’ 2”2.5 m
Draft: 5’ 4”1.62 m
Mast height from D_WL: 35’ 2”10.72 m
Light displacement (M_LC): 1984 lb900 kg
Ballast weight: 551 lb250 kg

Delphia 24 OD's rig and sails

Upwind sail area: 338 ft²31.38 m²
Downwind sail area: 712 ft²66.16 m²
Mainsail area: 228 ft²21.16 m²
Jib area: 110 ft²10.22 m²
Symmetric spinnaker area: 377 ft²35 m²
Asymmetric spinnaker area: 484 ft²45 m²
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: Continuous

Delphia 24 OD'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.: 362 ft²/T33.66 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.: 764 ft²/T70.97 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.: 70
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.: 28 %
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.: 6.48 knots