YANKEE 30 MKIII (3/4 TON)

YANKEE 30 MKIII (3/4 TON)

Beta Marine

Beta Marine

Sailboat Specifications

Definitions
Hull Type: Fin with rudder on skeg
Rigging Type: Masthead Sloop
LOA: 30.04 ft / 9.16 m
LWL: 25.00 ft / 7.62 m
S.A. (reported): 463.00 ft² / 43.01 m²
Beam: 9.00 ft / 2.74 m
Displacement: 10,000.00 lb / 4,536 kg
Ballast: 4,850.00 lb / 2,200 kg
Max Draft: 5.50 ft / 1.68 m
Construction: FG
Ballast Type: Lead
First Built: 1973
Last Built: 1990
Builder: Yankee Yachts Inc. (USA)
Designer: Sparkman & Stephens

Auxiliary Power/Tanks (orig. equip.)

Make: Universal
Model: Atomic 4
Type: Gas
HP: 30
Fuel: 17 gals / 64 L

Accomodations

Water: 30 gals / 114 L

Sailboat Calculations

Definitions
S.A. / Displ.: 16.01
Bal. / Displ.: 48.50
Disp: / Len: 285.71
Comfort Ratio: 31.22
Capsize Screening Formula: 1.67
S#: 1.78
Hull Speed: 6.70 kn
Pounds/Inch Immersion: 803.95 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

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I: 42.50 ft / 12.95 m
J: 12.75 ft / 3.89 m
P: 37.42 ft / 11.41 m
E: 10.30 ft / 3.14 m
S.A. Fore: 270.94 ft² / 25.17 m²
S.A. Main: 192.71 ft² / 17.90 m²
S.A. Total (100% Fore + Main Triangles): 463.65 ft² / 43.07 m²
S.A./Displ. (calc.): 16.04
Est. Forestay Length: 44.37 ft / 13.52 m

Sailboat Links

Designers: Sparkman & Stephens
Builders: Yankee Yachts Inc. (USA)
Associations: IOR 3/4 ton
Related Sailboats: YANKEE 30 MKI
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Notes

In addition to the taller rig and increased ballast, this model featured a redesigned rudder which accounts for it's greater listed water line length.(unmeasured by the IOR) Later still, the interior was changed which included, among other details, an extended port side settee with removable dinette.
After Yankee Yachts went out of business in 1975, a few boats were built by Heritage Boat Works and Vashon Island Boat Works, both of Oregon, USA. (Rig dimensions listed here are from the MK III published sailplan though they are not necessarily consistent even within this particular version.)