Shannon 43 Information, Review, Specs

Shannon 43 Drawing
Make
Shannon
Model
43
Builder
Shannon Yachts
Designer
Walter Shultz
Number Built
Production Year(s)
1986 - ??

Designed by Walter Schulz and launched in 1984, the Shannon 43 is a quintessential American blue-water voyager, engineered specifically for the rigors of long-distance offshore passage-making. Built in Bristol, Rhode Island, by the Shannon Boat Company, the 43 represents a culmination of Schulz's philosophy: that a yacht must be safe enough to protect a short-handed crew in a gale while remaining comfortable enough for extended living. The hull is a medium-displacement design featuring a sweeping shear line and a traditional aesthetic that belies its sophisticated internal engineering. Over its production life, the model evolved into the Shannon 43/46, often sharing the same hull mold but utilizing different stern treatments or interior configurations to accommodate varying owner requirements.

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Sailing Performance & Handling

The Shannon 43 is celebrated for its sea-kindly motion, a result of its 27,500-lb displacement and a Displacement/Length (D/L) ratio of approximately 250. This provides a stable, "heavy-weather" feel that resists the jarring motions typical of lighter, modern fin-keel boats. According to technical documentation from Shannon Yachts, the yacht was offered with several proprietary rig configurations designed by Schulz to simplify sail handling for couples. Most notable are the "Scutter" and "Sketch" rigs. The Scutter is a proprietary sloop-cutter hybrid that positions a large reaching sail on a bowsprit and a smaller working jib on an inner stay—both on furlers—allowing the helmsman to adjust the sail plan for winds ranging from 5 to 50 knots without leaving the cockpit. The Sketch rig provides a similar headsail arrangement with the addition of a mizzen mast for further versatility.

In terms of underwater profile, the boat was available with either a fixed 6'0" keel or a highly popular keel/centerboard configuration. The latter allows for a shallow-water draft of just 4'9" with the board up, extending to 8'7" for enhanced upwind performance. Test reports frequently mention that while the Shannon 43 is not a "round-the-buoys" racer, it excels at maintaining high average speeds over long passages, often averaging over 150 miles per day in trade wind conditions.

Interior Comfort & Variations

Because Shannon is a semi-custom builder, no two 43s are identical. The standard layout typically follows a traditional Herreshoff style, characterized by white bulkheads and rich oiled teak or cherry joinery. Maine Maritime Academy notes in their technical archives that the Shannon 43 provides a generous 6'4" of headroom throughout the main salon. Accommodations generally consist of a large V-berth forward, a U-shaped galley to starboard, and a dedicated navigation station that faces aft or forward depending on the specific hull's custom order.

Variations of the 43 include two-cabin and three-cabin layouts. In the two-cabin version, the owner’s suite forward is significantly expanded, often featuring a private head with a separate stall shower. The "Aft Cabin" variant provides a double berth to port of the companionway, which is favored for offshore use as it places the sleeper near the cockpit and navigation center. Ventilation is a hallmark of the design, with older models frequently featuring up to 12 opening bronze ports and four stainless steel dorade vents to ensure airflow in tropical climates.

The Shannon 43 gained significant cultural visibility through its association with actor Morgan Freeman, who owned a custom-built 43 named Sojourner. Freeman, an accomplished sailor, famously transitioned to the 43 after owning a Shannon 38, praising the boat's "bulletproof" construction and ease of handling during his voyages in the Caribbean. The model has also been featured in technical segments by Sailing Magazine, where reviewers have described it as "the boat you want to sail across the seven seas before venturing to the world's remote anchorages."

Known Issues & Buyer’s Checklist

Prospective buyers should focus on several high-signal areas that are common to yachts of this vintage and build style:

  • Tankage Accessibility: A unique "gotcha" for many older yachts is the inability to remove fuel and water tanks without cutting the deck. Walter Schulz specifically designed the Shannon 43 so that all tanks can fit through the companionway for replacement. Buyers should verify if the aluminum fuel tanks (often totaling ~100 gallons) have been replaced, as they typically reach the end of their service life after 20-25 years.
  • Centerboard Assembly: For models equipped with the centerboard, the manual winching system and the board’s pivot pin require periodic inspection. While the pin can technically be inspected while the boat is in the water, a haul-out is recommended to check for play in the trunk or wear on the pennant.
  • Core Integrity: Unlike many competitors that used balsa wood, Shannon used linear PVC foam cores in the hull. While this significantly reduces the risk of catastrophic rot, the deck—which often features a closed-cell foam core—should still be checked for delamination around aftermarket hardware installations where the core may have been compromised by moisture.
  • Rudder Bearings: In technical discussions on owner platforms, the robust skeg-hung rudder is noted for its strength, but the lower bronze gudgeon and the upper bearings should be inspected for "slop" or vibration, which can develop over thousands of sea miles.

Community & Resources

The Shannon community is centered around the manufacturer itself, as Shannon Yachts continues to operate under Walter Schulz’s leadership. The company maintains a "Shannon Brokerage" and technical archive in Bristol, RI, providing original production orders, wiring diagrams, and engineering drawings for every hull built. This level of factory support is rare for boats of this age and serves as a primary resource for owners undertaking refits.

The Verdict

Pros:

  • Exceptional Build Quality: Hand-laid composite hulls with vinylester resins and no balsa wood core in the hull.
  • Safety-First Design: Encapsulated lead ballast (no keel bolts to fail) and a protected skeg-hung rudder.
  • Versatile Rigs: Proprietary Scutter and Sketch rigs make the boat remarkably easy to sail short-handed.
  • Shallow Water Access: The centerboard version allows for world cruising and gunkholing in areas like the Bahamas.

Cons:

  • Premium Pricing: Shannons hold their value well, meaning they are often more expensive than mass-produced yachts of the same age.
  • Maintenance of Custom Systems: High-end woodwork and proprietary rig components may require more specialized maintenance than standard production sloops.
  • Heavy Motion: While sea-kindly, the boat’s weight makes it less responsive in very light air (under 8 knots) compared to modern performance cruisers.

Measurements

Construction & Hull

Construction Material
Fiberglass
Hull Type
Monohull Sailboat
Keel Type
Centerboard
Rudder
1x —
Ballast
10000 lbs (Lead)
Displacement
27000 lbs
Water Capacity
200 gal
Fuel Capacity
100 gal

Dimensions

Length Overall (LOA)
43.83 ft
Waterline Length (LWL)
36.58 ft
Beam
13 ft
Draft
8.58 ft
Max Headroom
-
Air Draft
60 ft
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

Rig Type
Ketch
P (Main Luff)
48.75 ft
E (Main Foot)
15.83 ft
I (Foretriangle Height)
55.5 ft
J (Foretriangle Base)
19.25 ft
Forestay Length (est)
58.74 ft
Sail Area
910 sqft

Calculations

Sail Area / Displacement (SA/D) Ratio
16.17
Ballast / Displacement Ratio
37.04
Displacement / Length Ratio (D/L) Ratio
246.25
Comfort Ratio
35.37
Capsize Screening Formula
1.73
Hull Speed
8.1 kn