Cape Cod 30 Information, Review, Specs

Make
Cape Cod
Model
30
Builder
Cape Cod Shipbuilding
Designer
Sidney Herreshoff
Number Built
Production Year(s)
1961 - ??

The Cape Cod 30, designed by Sidney DeWolf Herreshoff, stands as a premier example of the transition between the golden age of wooden yacht design and the emergence of fiberglass as a primary construction material. Launched by the Cape Cod Shipbuilding Co., this vessel was envisioned as a robust family cruiser capable of handling the unpredictable waters of Buzzards Bay and the wider Atlantic coast. Unlike the mass-produced, lightweight coastal cruisers that would come to dominate the market in later decades, the Cape Cod 30 was engineered with a "heavy-duty" philosophy, featuring a hand-laid fiberglass hull of substantial thickness and a full-keel configuration that prioritizes stability and tracking over raw speed.

Sailing Performance & Handling

Under sail, the Cape Cod 30 exhibits the stately and predictable behavior characteristic of Sidney Herreshoff’s designs. With a displacement that leans toward the heavier end of the 30-foot spectrum, the boat possesses significant momentum, allowing it to power through chop that would stall lighter vessels. Its full keel and attached rudder provide exceptional directional stability, meaning the boat "tracks on rails" and requires minimal helm correction when properly balanced.

The sail plan is typically a conservative masthead sloop, though the boat's high ballast-to-displacement ratio allows it to carry full sail longer than many of its contemporaries. While it is not a "light air" specialist due to its wetted surface area, it excels in a breeze. Editorial reviews often note that the boat feels significantly larger than its 30-foot length suggests, providing a sense of security in offshore conditions. According to technical specifications maintained by the Cape Cod Shipbuilding Co., the boat was designed with a deep-V entry to minimize pounding, a feature that contributes to its reputation for "sea-kindliness."

Interior Comfort & Variations

The interior of the Cape Cod 30 is a masterclass in traditional New England joinery, utilizing extensive teak and mahogany to create a warm, shipshape atmosphere. The layout is a classic four-to-five berth arrangement: a forward V-berth, a central salon with settees (often featuring a pilot berth or folding table), and a compact galley located near the companionway for optimal ventilation.

One of the standout features of this model is the headroom, which remains impressive for a boat of this vintage, typically clearing six feet in the main cabin. Because Cape Cod Shipbuilding operated as a semi-custom yard, variations exist in the cabinetry and galley configurations. Some models were outfitted with more extensive navigation stations, while others prioritized seating capacity. The sibling model, often referred to as the Cape Cod 30 Motorsailer, utilized the same hull but featured a raised doghouse for improved visibility and internal steering, though the standard sloop remains the more prevalent find on the used market.

Known Issues & Buyer’s Checklist

While Cape Cod Shipbuilding is legendary for its "over-built" hulls, the age of these vessels necessitates a careful inspection of several key systems:

  • Deck Core Integrity: Like most boats of this era, the decks are balsa-cored. Buyers should use a phenolic hammer to check for delamination or "soft spots" around high-load areas such as stanchion bases and the mast step.
  • Chainplate Anchors: On older hulls, the points where the chainplates meet the bulkheads should be inspected for water intrusion, which can lead to rot in the structural plywood.
  • Propulsion: Many original Cape Cod 30s were equipped with the Universal Atomic 4 gasoline engine. While reliable if maintained, many have been repowered with Yanmar or Westerbeke diesels. A buyer should verify the age and service records of the cooling system, as salt-water cooled engines of this age often suffer from internal scale buildup.
  • Hull-to-Deck Joint: Although the builder pioneered a secretive bonding method to create a "one-piece" feel, the external rub rail area should be inspected for signs of weeping or stress cracks, which can indicate impacts or age-related fatigue in the sealant.

Community & Resources

Owners of the Cape Cod 30 benefit from the fact that the original builder, Cape Cod Shipbuilding Co., remains in operation in Wareham, Massachusetts. They continue to provide technical support, original parts, and even refurbished components for their legacy models. Unlike many defunct brands, CC30 owners can often call the factory to discuss specific hull histories or structural questions, a rarity in the world of vintage fiberglass yachts.

The Verdict

The Cape Cod 30 is an "honest" boat—a vessel built without compromise for the sailor who values tradition, safety, and longevity over modern gadgets and planing speeds.

Pros:

  • Exceptional Build Quality: A hull thickness that modern builders rarely replicate.
  • Timeless Aesthetics: The Sidney Herreshoff pedigree ensures the boat will always be admired in any harbor.
  • Exceptional Tracking: A stable platform that is easy for a solo sailor or a small family to manage in heavy weather.
  • Manufacturer Support: Direct access to the original builder for parts and advice.

Cons:

  • Heavy Air Dependency: Can feel sluggish in light winds (under 8 knots).
  • Maintenance Requirements: The extensive interior and exterior wood requires a dedicated owner to maintain its luster.
  • Maneuverability: The full keel makes backing under power in tight marinas a challenge for the uninitiated.

Measurements

Construction & Hull

Construction Material
Fiberglass
Hull Type
Monohull Sailboat
Keel Type
Full
Rudder
1x Attached
Ballast
-
Displacement
7000 lbs
Water Capacity
-
Fuel Capacity
-

Dimensions

Length Overall (LOA)
30 ft
Waterline Length (LWL)
23.17 ft
Beam
9 ft
Draft
5 ft
Max Headroom
-
Air Draft
-
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

Rig Type
Masthead Sloop
P (Main Luff)
32.25 ft
E (Main Foot)
12.67 ft
I (Foretriangle Height)
36.5 ft
J (Foretriangle Base)
12.83 ft
Forestay Length (est)
38.69 ft
Sail Area
438 sqft

Calculations

Sail Area / Displacement (SA/D) Ratio
19.15
Ballast / Displacement Ratio
Displacement / Length Ratio (D/L) Ratio
251.23
Comfort Ratio
22.98
Capsize Screening Formula
1.88
Hull Speed
6.45 kn