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Sailboat specifications and datasheets

Sun Dream 28 keel and centerboard

The Sun Dream 28, here in "keel and centerboard" version, is a 27’1” monohull sailboat designed by Tony Castro. She was built by Jeanneau (France) and made of monolithic fiberglass / polyester. This sailboat was produced between 1987 and 1991 with 407 hulls completed.

The Sun Dream 28 is as well listed, on Boat-Specs.com, in version Fin keel.

Jeanneau Sun Dream 28 Jeanneau Sun Dream 28 sailplanJeanneau Sun Dream 28 layoutJeanneau Sun Dream 28 layoutJeanneau Sun Dream 28 sailing
Sun Dream 28's   Main Features
Model Sun Dream 28
Version Keel and centerboard
Type of hull Monohull
Category Cruising sailboat
Shipyard
Designer Tony Castro
Construction Hull and deck:
monolithic fiberglass / polyester
First built hull 1987
Last built hull 1991
Number of hulls built 407
Appendages Centerboard :
Centerboard in the keel
Helm 1 tiller
Rudder 1 transom hung rudder
Cockpit Closed aft cockpit
Unsinkable No
Trailerable No
French navigation category 2
Standard public price ex. VAT (indicative only) N/A
Sun Dream 28's   Main dimensions
Length overall 29’ 6”
Hull length 27’ 1”
Waterline length 24’ 6”
Beam (width) 10’ 4”
Draft 6’ 2”
Draft when appendages up 3’ 4”
Mast height from DWL 41’ 5”
Light displacement 6393 lbs
Ballast weight 2800 lbs
Ballast type Cast iron exterior ballast with steel centerboard
French customs tonnage 7.06 Tx
Sun Dream 28's   Rig and sails
Upwind sail area 484 sq.ft
Downwind sail area 868 sq.ft
Mainsail area 184 sq.ft
Genoa area 300 sq.ft
Solent area 249 sq.ft
Jib area 157 sq.ft
Stormjib area 53 sq.ft
Symetric spinnaker area 684 sq.ft
Rigging type Sloop Marconi masthead
Rotating spars No
Mast position Deck stepped mast
Spars Mast and boom in Aluminum
Standing rigging 1x19 strand wire continuous
Number of levels of spreaders 1
Spreaders angle Swept-back
IiFore triangle height (from mast foot to fore stay attachment) 35’ 4”
JiFore triangle base (from mast foot to bottom of forestay) 11’ 8”
PiMainsail hoist measurement (from tack to head) 30’ 2”
EiMainsail foot measurement (from tack to clew) 10’ 10”
Sun Dream 28's   Performances
HN (French rating) 15.0
Upwind sail area to displacementiThe 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 23 it indicates a fast sailboat.
22.09
Downwind sail area to displacementiThe 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 23 it indicates a fast sailboat.
39.63
Displacement-Length ratio (DLR)iThe Displacement Length ratio is a figure that points out the boat's weight compared to its waterline length. 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.
198
Ballast ratioiThe Ballast ratio is an indicator of the stability; it is obtained by dividing the boat's displacement by the weight of the ballast. Since the stability depends also of the hull shape and the position of the center of gravity, only boats with similar ballast arrangements and hull shape should be considered.
Higher the ballast ratio is, greater is the stability.
44 %
Wetted surface 184 sq.ft
Righting moment @ 1°iThe righting moment is a moment (torque) that tends to restore a boat to its previous position after a rotational displacement. 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 at this angle.
454 lbs.ft
Maximum transverse section 10 sq.ft
Hull speediAs 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.
6.63 knots
Sun Dream 28's   Auxiliary engine
Engine(s) 1
Engine type Inboard engine
Engine (min/max) 18 HP
Fuel type Diesel
Fuel tank capacity 7.1 gal
Sun Dream 28's   Accommodation
Cabin(s) 2
Berth(s) 6
Head(s) 1
Fresh water tank capacity 26.4 gal
Water heater capacity 19.8 gal
Chart table 2’ x 1’ 8”
Maximum headroom 6’ 2”
Galley headroom 5’ 11”
Head headroom 5’ 11”
Sun Dream 28's   Saloon
Maximum headroom 5’ 11”
Saloon table length 3’ 11”
Saloon table width (min/max) 2’ 4” / 2’ 10”
Berth length 6’ 1”
Berth width 1’ 10”
Sun Dream 28's   Fore cabin
Maximum headroom 4’ 10”
Berth length 6’ 2”
Berth width 5’ 2”
Sun Dream 28's   Aft cabin
Maximum headroom 5’ 11”
Berth length 6’ 2”
Berth width 4’ 4”

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