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Seller's Description

Contact Jeff at FiveSixFourNineNineNineSevenZeroThreeNine

Boat is located in Olympia, Washington.

YANKEE YACHTS HULL 23.

Robert Finch designed 28’ masthead sloop with keel step mast, fin keel and skeg hung rudder.

Bottom taken down to the base and built up with multiple layers of barrier coat and Trinidad SR antifouling bottom paint.

Hull professionally rolled and tipped with Interlux Perfection 2-part Poly topside and Interlux Epoxy Primekote 2 part Primer.

Garmin chart plotter and thru-hull transducer installed.

New alcohol stove.

New custom strut and sailors prop. 2GM20F 16hp 2 cylinder Yanmar diesel.

Unknown engine hours.

It was professionally installed by previous owner.

Engine like new!

Routine maintenance and oil change always done.

New Jabsco head and holding tank.

Holding tank never been used!

Smells fresh & clean.

Toe rails sanded and re-finished with six coats varnish.

Fresh Zincs.

Boat just dove.

Scrubbed and inspected (see pics).

She’s a great boat and want her to go to a good home!

Link to sailboat data below. https://sailboatdata.com/sailboat/yankee-28

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Specs

Designer
Robert Finch
Builder
Yankee Yachts Inc.
Association
Half Ton Class
# Built
?
Hull
Monohull
Keel
Fin
Rudder
Skeg
Construction
FG

Dimensions

Length Overall
27 11 / 8.5 m
Waterline Length
21 10 / 6.7 m
Beam
8 0 / 2.4 m
Draft
?
Displacement
6,500 lb / 2,948 kg
Ballast
2,750 lb / 1,247 kg (Lead)

Rig and Sails

Type
Sloop
Reported Sail Area
366′² / 34 m²
Total Sail Area
366′² / 34 m²
Mainsail
Sail Area
154′² / 14.3 m²
P
30 9 / 9.4 m
E
10 0 / 3.1 m
Air Draft
?
Foresail
Sail Area
212′² / 19.7 m²
I
35 11 / 11 m
J
11 9 / 3.6 m
Forestay Length
37 10 / 11.6 m

Auxilary Power

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

Accomodations

Water Capacity
?
Holding Tank Capacity
?
Headroom
?
Cabins
?

Calculations

Hull Speed
6.7 kn
Classic: 6.27 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

6.72 knots
Classic formula: 6.27 knots
Sail Area/Displacement
16.8
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.
16.81
<16: under powered
16-20: good performance
>20: high performance
Ballast/Displacement
42.3
>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

42.3
<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
276.9
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
276.87
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
24.4
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
24.4
<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
1.82
<2: better suited for ocean passages
>2: better suited for coastal cruising

This listing is presented by SailboatListings.com. Visit their website for more information or to contact the seller.

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