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Seller's Description

Shannons are highly regarded for their exceptional strength, classic styling, comfortable interiors and functional deck layouts. Many Shannons have circumnavigated, and their owners praise the sea kindly motion, excellent direction control, stability, and the numerous sail combinations offered with the ketch sail plan.

That being said, she is in need of some work, but is defiantly able to get underway. I think she would be a good project boat for someone who has the time, skills and knowledge to take on such a project. I had a full survey on her completed Nov. 10, 2022, that I am willing to share with you. The boat is currently in the water, and I am living aboard while I take care of the A, B and C items from the survey. If you are interested in the boat, I am available at any time to show you around the boat. As far as sale price…it is negotiable as long as you are able to show that you can get Insurance on the boat.

Equipment: Perkins 4-236, Vetus Bow thruster, 6kw Northern Lights Gen, 4 Racor filters,7 fuel tanks,2 Holding tanks, Hot water tank, Lighthouse 1501 windlass, 80 lb Manson Supreme anchor w/150’of the chain, 250’ 7/16” spare portion of chain, 45lb Lewmar Delta Anchor, Rail mounted barbecue, 13 winches, Spinnaker pole, Cruising spinnaker with ATN sock, Cockpit mainsail winch - electric, Mack Pack sail covers, cockpit dodger and bimini, Midship companionway dodger, 4 New Kiddle Mariner 110 Fire extinguishers, Achilles 11 foot Hard bottom dinghy w/15hp yamaha, 12” Furuno Navnet EX2 Plotter, Furuno Nav Net 2 with 7” color display (radar, plotter, fish finder, AIS), 4ea. 30 multi displays on bulkhead, forward end cockpit, and much more…

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Specs

Designer
Walter Shultz
Builder
Shannon Yachts
Associations
?
# Built
?
Hull
Monohull
Keel
Stub + Centerboard
Rudder
?
Construction
FG

Dimensions

Length Overall
50 0 / 15.2 m
Waterline Length
42 8 / 13 m
Beam
14 0 / 4.3 m
Draft
4 11 / 1.5 m
Displacement
39,000 lb / 17,690 kg
Ballast
15,500 lb / 7,031 kg (Lead)

Rig and Sails

Type
Ketch
Reported Sail Area
1,222′² / 113.5 m²
Total Sail Area
1,022′² / 95 m²
Mainsail
Sail Area
429′² / 39.9 m²
P
49 8 / 15.2 m
E
17 3 / 5.3 m
Air Draft
?
Foresail
Sail Area
593′² / 55.1 m²
I
56 5 / 17.2 m
J
20 11 / 6.4 m
Forestay Length
60 3 / 18.4 m
Mizzen
PY
33 11 / 10.4 m
EY
11 8 / 3.6 m

Auxilary Power

Make
?
Model
?
HP
?
Fuel Type
?
Fuel Capacity
?
Engine Hours
?

Accomodations

Water Capacity
?
Holding Tank Capacity
?
Headroom
?
Cabins
3

Calculations

Hull Speed
10.1 kn
Classic: 8.76 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

10.05 knots
Classic formula: 8.76 knots
Sail Area/Displacement
17.0
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.
17.0
<16: under powered
16-20: good performance
>20: high performance
Ballast/Displacement
39.8
<40: less stiff, less 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

39.75
<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
222.9
200-275: moderate

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
222.86
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
38.5
30-40: moderate bluewater cruising boat

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
38.5
<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
1.7
<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
1.68
<2: better suited for ocean passages
>2: better suited for coastal cruising

Notes

A pilot house version was the AEGEAN 51.

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

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