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Sailboat specifications and datasheets

Hobie 33

The Hobie 33 is a 33’1” monohull sailboat designed by Hobbart (Hobie) Alter. She was built by Hobie Cat (United States) and made of sandwich fiberglass / polyester. This sailboat was produced between 1982 and 1987 with 147 hulls completed.
Hobie Cat Hobie 33 Hobie Cat Hobie 33 sailplanHobie Cat Hobie 33 sailingHobie Cat Hobie 33 sailingHobie Cat Hobie 33 sailing
Hobie 33's   Main Features
Model Hobie 33
Type of hull Monohull
Category Racer-cruiser sailboat
Shipyard
Designer Hobbart (Hobie) Alter
Construction Hull and deck:
sandwich fiberglass / polyester
First built hull 1982
Last built hull 1987
Number of hulls built 147
Appendages Keel (lifting) :
Fin with bulb, lifting
Helm 1 tiller
Rudder 1 spade rudder
Cockpit Closed aft cockpit
Unsinkable No
Trailerable Yes
Standard public price ex. VAT (indicative only) N/A
Hobie 33's   Main dimensions
Hull length 33’ 1”
Waterline length 30’ 10”
Beam (width) 7’ 11”
Draft 5’ 6”
Draft when appendages up 3’
Light displacement 4191 lbs
Ballast weight 1903 lbs
Ballast type Lead
Hobie 33's   Rig and sails
Upwind sail area 425 sq.ft
Rigging type Sloop Marconi fractional
Rotating spars No
Mast position Deck stepped mast
Spars Mast and boom in Aluminum
Standing rigging Continuous
Number of levels of spreaders 1
Spreaders angle Swept-back
IiFore triangle height (from mast foot to fore stay attachment) 36’ 4”
JiFore triangle base (from mast foot to bottom of forestay) 12’ 5”
PiMainsail hoist measurement (from tack to head) 35’
EiMainsail foot measurement (from tack to clew) 12’ 6”
Hobie 33's   Performances
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.
25.74
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.
65
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.
45 %
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.
7.44 knots
Hobie 33's   Auxiliary engine
Engine(s) 1
Engine type Outboard engine
Engine 10 HP
Fuel type Gas
Hobie 33's   Accommodation
Cabin(s) 1
Berth(s) (min/max) 4 / 6
Head(s) 1

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