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1973 Yankee 30

Listed
$10,000 USD

Seller's Description

UNDER AGREEMENT

This Sparkman & Stephens designed racer/cruiser is a true classic. While in production for only 5 years it was built to the high-quality standards of Yankee Yachts.

Owen Meany has an Atomic 4 gasoline engine with 1,400 hours on it. Two Barient 27 primary winches, spinnaker winches a halyard winch and cabin-top traveler and adjustable backstay. Boat features wheel steering with a Raymarine ST4000 wheel pilot.

Equipment: -Wheel Steering -Raymarine Autopilot ST4000 (former owner never used) -Steel Cradle -UK Mainsail (inspected and minor repairs by Quantum Dec 2023, very good condition) -UK Headsail (inspected and minor repairs by Quantum Dec 2023, very good condition) -Harken roller furling -Regular and self-tailing winches -VC-17 anti-fouling bottom -Cushions done in 2024

Specs

Designer
Sparkman & Stephens
Builder
Yankee Yachts Inc.
Associations
?
# Built
130
Hull
Monohull
Keel
Fin
Rudder
Skeg
Construction
FG

Dimensions

Length Overall
29′ 11″ / 9.1 m
Waterline Length
22′ 11″ / 7 m
Beam
8′ 11″ / 2.7 m
Draft
4′ 11″ / 1.5 m
Displacement
8,700 lb / 3,946 kg
Ballast
4,130 lb / 1,873 kg (Lead)

Rig and Sails

Type
Sloop
Reported Sail Area
430′² / 40 m²
Total Sail Area
430′² / 39.9 m²
Mainsail
Sail Area
175′² / 16.2 m²
P
34′ 10″ / 10.6 m
E
10′ 0″ / 3.1 m
Air Draft
?
Foresail
Sail Area
255′² / 23.7 m²
I
39′ 11″ / 12.2 m
J
12′ 9″ / 3.9 m
Forestay Length
41′ 11″ / 12.8 m

Auxilary Power

Make
Universal
Model
Atomic 4
HP
30
Fuel Type
Gas
Fuel Capacity
?
Engine Hours
?

Accomodations

Water Capacity
22 gal / 83 l
Holding Tank Capacity
?
Headroom
?
Cabins
1

Calculations

Hull Speed
6.6 kn
Classic: 6.43 kn

Hull Speed

The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.

Formula

Classic hull speed formula:

Hull Speed = 1.34 x √LWL

A more accurate formula devised by Dave Gerr in The Propeller Handbook replaces the Speed/Length ratio constant of 1.34 with a calculation based on the Displacement/Length ratio.

Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio.311
Hull Speed = Max Speed/Length ratio x √LWL

6.59 knots
Classic formula: 6.43 knots
Sail Area/Displacement
16.3
16-20: good performance

Sail Area / Displacement Ratio

A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.

Formula

SA/D = SA ÷ (D ÷ 64)2/3

  • SA: Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay).
  • D: Displacement in pounds.
16.27
<16: under powered
16-20: good performance
>20: high performance
Ballast/Displacement
47.5
>40: stiffer, more powerful

Ballast / Displacement Ratio

A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.

Formula

Ballast / Displacement * 100

47.47
<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
319.3
275-350: heavy

Displacement / Length Ratio

A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.

Formula

D/L = (D ÷ 2240) ÷ (0.01 x LWL)³

  • D: Displacement of the boat in pounds.
  • LWL: Waterline length in feet
319.25
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
28.5
20-30: coastal cruiser

Comfort Ratio

This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.

Formula

Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam1.33)

  • D: Displacement of the boat in pounds
  • LWL: Waterline length in feet
  • LOA: Length overall in feet
  • Beam: Width of boat at the widest point in feet
28.53
<20: lightweight racing boat
20-30: coastal cruiser
30-40: moderate bluewater cruising boat
40-50: heavy bluewater boat
>50: extremely heavy bluewater boat
Capsize Screening
1.8
<2.0: better suited for ocean passages

Capsize Screening Formula

This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.

Formula

CSV = Beam ÷ ³√(D / 64)

  • Beam: Width of boat at the widest point in feet
  • D: Displacement of the boat in pounds
1.75
<2: better suited for ocean passages
>2: better suited for coastal cruising

Notes

S&S design #1999.
After Yankee Yachts went out of business in 1975, a few boats were built by Heritage Boat Works (OR) and Vashon Island Boat Works (WA),USA.
From this latter builder also came the VASHON ISLAND 30 or VASHON 30, a Pilot House cruiser that appears to share the same hull.

The MK I, II, and III, were differentiated primarily by incrementally taller rigs as well as a few details in the interior layout.
(Hulls after #98 are designated MK II).
The MK III, has an additional 1000 lbs. of internal ballast. (Rig dimension as well as other details are not always consistent within a particular version.)

Available engines:
Universal Atomic 4 (gas)
Albin 2-cyl Diesel
Bukh 2-cyl Diesel

The S&S 30, built by Swarbrick Brothers of Australia is based on the same design (S&S No. 1999-C1).

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