Coronado 27 Information, Review, Specs

Coronado 27 Drawing
Make
Coronado
Model
27
Builder
Coronado Yachts
Designer
William Tripp Jr.
Number Built
Production Year(s)
1970 - 1973

The Coronado 27, introduced in 1970, represents a pivotal era in the evolution of American production sailboats, serving as a bridge between the early days of Frank Butler’s Wesco Marine and the corporate expansion under the Whittaker Corporation. Designed by the esteemed naval architect William Crealock, the Coronado 27 was engineered to maximize interior volume and creature comforts within a trailerable-width hull, a hallmark of the Coronado brand's "more boat for the buck" philosophy. While it shares some DNA with the earlier Coronado 25, the 27 was a ground-up redesign featuring a more modern fin keel and spade rudder configuration, distancing it from the long-keel traditions of the 1960s. According to historical technical archives maintained by the Columbia Yacht Owners Association, the model was produced until approximately 1974, during which time it became a staple of coastal marinas across North America.

Sailing Performance & Handling

Despite its primary identity as a high-volume cruiser, the Coronado 27 benefits significantly from William Crealock’s design pedigree. The hull features a relatively high displacement-to-length ratio, which provides a stable, predictable motion in a seaway. With a displacement of roughly 6,250 pounds and a ballast-to-displacement ratio hovering near 40%, the boat is notably "stiff," meaning it resists initial heel and provides a sense of security for novice sailors.

The transition from the Coronado 25’s keel-hung rudder to the 27’s spade rudder significantly improved the vessel's responsiveness. Owners and period testers often noted that while the boat is not a light-air flyer—owing to its substantial wetted surface and modest sail area—it tracks exceptionally well when the breeze reaches 10–12 knots. The fin keel allows for respectable upwind performance, though the high-sided "shoebox" hull design creates considerable windage, which can make docking in a crosswind a technical exercise. In heavy weather, the boat's mass allows it to punch through a chop that would stall lighter 27-footers, though it is ultimately a coastal cruiser rather than a blue-water offshore specialist.

Interior Comfort & Variations

The interior of the Coronado 27 was arguably its strongest selling point, designed to lure buyers who found the competing designs of the era too cramped. The boat offers a remarkable 6'2" of headroom, a feat achieved through a high-profile deck mold that provides a spacious, airy feel. The layout typically features a forward V-berth, a marine head with a privacy door, and a main salon with a dinette that converts into a double berth.

Materials used during this era were consistent with the "Whittaker-era" production: abundant use of wood-grain Formica and teak trim to balance durability with a classic aesthetic. The galley is generally located aft near the companionway for better ventilation and features a deep sink and icebox. A notable sibling variant is the Coronado 30, which utilized similar design language but offered an even beamier footprint; however, the 27 remains the most popular of the mid-range Coronados due to its balance of "big boat" feel and manageable slip fees.

Known Issues & Buyer’s Checklist

Prospective buyers of a Coronado 27 should approach the vessel with an understanding of 1970s fiberglass construction techniques. While the hulls are generally thick and robust, several age-related issues are common across the fleet.

  1. Deck Delamination: Like many boats of this vintage, the Coronado 27 used a balsa-cored deck. Moisture ingress through improperly bedded stanchions or deck hardware often leads to "soft spots." A thorough percussion test (tapping with a plastic hammer) is essential to identify areas where the core has rotted or separated from the fiberglass skins.
  2. Mast Step Compression: The mast is deck-stepped, supported by a compression post that transfers the load to the keel. Over decades, if water has leaked into the wooden block beneath the mast step or the base of the compression post, the deck may begin to sag, leading to rig tension issues and interior door misalignment.
  3. Spade Rudder Integrity: The spade rudder is a hollow fiberglass shell over a metal frame. Owners should check for "rudder bloom" or weeping rust at the seams, which indicates the internal steel structure may be corroding, potentially leading to structural failure under heavy load.
  4. Chainplate Leakage: The chainplates on the 27 are bolted to the bulkheads. If the deck seals are not maintained, water can travel down the plates and rot the plywood bulkheads, compromising the structural integrity of the rig.

Community & Resources

The primary hub for technical data, original brochures, and parts cross-referencing for this model is the Columbia Yacht Owners Association, which treats Coronado models as "cousins" to the Columbia line due to their shared manufacturing history under the Whittaker Corporation. This resource is invaluable for owners seeking to restore original hardware or understand the nuances of the Crealock design.

The Verdict

The Coronado 27 remains a highly functional entry-level cruiser for families or couples seeking maximum interior space on a modest budget. While it lacks the refined finish of a modern yacht, its honest construction and stable handling make it a forgiving platform for coastal exploration.

Pros:

  • Exceptional interior headroom and volume for its length.
  • Stable and predictable handling in moderate to heavy winds.
  • Strong community support and availability of historical documentation.
  • Low purchase price makes it an accessible "starter boat."

Cons:

  • High windage can make maneuvering in tight slips difficult.
  • 1970s build quality requires vigilance regarding deck cores and bulkheads.
  • Not a competitive choice for PHRF racing or light-air performance.

Measurements

Construction & Hull

Construction Material
Fiberglass
Hull Type
Monohull Sailboat
Keel Type
Fin
Rudder
1x Spade
Ballast
2550 lbs (Iron)
Displacement
6250 lbs
Water Capacity
-
Fuel Capacity
9 gal

Dimensions

Length Overall (LOA)
26.67 ft
Waterline Length (LWL)
22 ft
Beam
8.5 ft
Draft
5.42 ft
Max Headroom
-
Air Draft
-
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

Rig Type
Masthead Sloop
P (Main Luff)
27 ft
E (Main Foot)
9.5 ft
I (Foretriangle Height)
32.4 ft
J (Foretriangle Base)
10.75 ft
Forestay Length (est)
34.14 ft
Sail Area
302 sqft

Calculations

Sail Area / Displacement (SA/D) Ratio
14.24
Ballast / Displacement Ratio
40.8
Displacement / Length Ratio (D/L) Ratio
262.04
Comfort Ratio
23.86
Capsize Screening Formula
1.85
Hull Speed
6.29 kn