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Swan 36

Sailboat specifications

The Swan 36 is a 35’10” (10.91m) cruiser-racer sailboat designed by Sparkman & Stephens (United States). She was built between 1967 and 1970 by Nautor's Swan (Finland).

Swan 36's main features

Model
Swan 36
Hull type
Monohull
Category
Cruiser-racer sailboat
Sailboat builder
Sailboat designer
Country
Finland
Construction
GRP (glass reinforced polyester):
- Hull: Single skin fiberglass polyester
- Deck: Sandwich fiberglass polyester
Number of hulls built
About 90
First built hull
1967
Last built hull
1970
Appendages
Keel : fin without bulb
Helm
Single tiller
Rudder
Single spade rudder
Unsinkable
No
Trailerable
No
Former French navigation category
1
Standard public price ex. VAT (indicative only)
N/A

Swan 36's main dimensions

Hull length
35’ 10”10.91 m
Waterline length
25’ 6”7.77 m
Beam (width)
9’ 7”2.94 m
Draft
6’ 2”1.9 m
Light displacement (MLC)
15432 lb7000 kg
Ballast weight
7937 lb3600 kg
Ballast type
Lead

Swan 36's rig and sails

Upwind sail area
681 ft²63.3 m²
Downwind sail area
1316 ft²122.3 m²
Mainsail area
229 ft²21.3 m²
Genoa area
452 ft²42 m²
Symmetric spinnaker area
1087 ft²101 m²
I
 iFore triangle height (from mast foot to fore stay top attachment)
42’ 11”13.07 m
J
 iFore triangle base (from mast foot to bottom of forestay)
13’ 8”4.17 m
P
 iMainsail hoist measurement (from tack to head)
38’ 1”11.6 m
E
 iMainsail foot measurement (from tack to clew)
13’ 1”3.99 m
Rigging type
Sloop Marconi masthead
Mast configuration
Keel stepped mast
Rotating spars
No
Number of levels of spreaders
1
Spreaders angle
0 °
Spars construction
Aluminum spars
Standing rigging
Continuous

Swan 36's performances

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.
18.0
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.
186 ft²/T17.3 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.
360 ft²/T33.42 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.
423
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.
51 %
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.
6.77 knots

Swan 36's auxiliary engine

Engine(s)
1 inboard engine
Engine(s) power
15 HP
Fuel type
Diesel
Fuel tank capacity
13.2 gal50 liters

Swan 36's accommodations and layout

Cockpit
Closed aft cockpit
Cabin(s)
1
Berth(s) (min./max.)
4 / 7
Head(s)
1
Freshwater tank capacity
44.9 gal170 liters
Maximum headroom
6’ 2”1.88 m
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1977
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1970
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1979
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