Coronado 45 Information, Review, Specs

Coronado 45 Drawing
Make
Coronado
Model
45
Builder
Coronado Yachts
Designer
William Tripp Jr.
Number Built
Production Year(s)
1974 - 1975

The Coronado 45 stands as the pinnacle of the Coronado Yachts lineup, representing the final, most ambitious era of the brand before its dissolution in the mid-1970s. Produced primarily between 1974 and 1976 under the stewardship of the Whittaker Corporation, the vessel was a direct sibling to the Columbia 45, utilizing the same William H. Tripp Jr. designed hull. While many earlier Coronado models were entry-level cruisers focused on trailerability and cost-efficiency, the 45 was a transition into the "motorsailer" category—a massive, high-volume center-cockpit yacht designed for long-range cruising and live-aboard comfort. By the time this model was released, Coronado had moved production to Columbia's facilities, resulting in a boat that shared the robust, heavy-scantling construction typical of the Columbia brand while maintaining the Coronado emphasis on interior ergonomics.

Sailing Performance & Handling

The Coronado 45 is fundamentally a heavy-displacement cruiser, weighing in at approximately 28,000 pounds with a moderate Sail Area-to-Displacement (SA/Disp) ratio of roughly 14.4. This technical profile suggests a boat that requires a stiff breeze to find its groove; it is not a light-air performer. However, the Tripp-designed hull provides a surprisingly clean exit through the water and respectable tracking. According to technical archives preserved by the Columbia Yacht Owners Association, the hull was engineered with a long, shallow fin keel and a skeg-hung rudder, a combination that favors directional stability over tight-quarters maneuverability.

Under sail, the boat exhibits high initial stability due to its 12' 4" beam and 11,000 pounds of ballast. It is often described by owners as a "dry" boat because the high freeboard and center-cockpit configuration keep the crew well above the spray. However, that same freeboard creates significant windage, making the vessel prone to "sailing" over its anchor and requiring careful throttle management when docking in a crosswind. While most were rigged as sloops, a ketch configuration was available, which many long-distance cruisers preferred for its ability to balance the sail plan in heavy weather.

Interior Comfort & Variations

The interior of the Coronado 45 was marketed as a "luxury apartment on the water," a claim supported by its massive internal volume. The deck salon design features large wraparound windows that flood the main cabin with natural light, a stark contrast to the "cave-like" interiors of contemporary performance boats. The layout typically features a large u-shaped galley and a dedicated navigation station, but the true highlight is the "Great Cabin" aft. Accessible via a walk-through alleyway, the master stateroom provides a level of privacy and floor space rarely seen in 1970s yachts of this length.

Sibling variations are notable; the Coronado 45 shared its mold with the Columbia 45, but the Coronado version often featured different deck molds and interior trim packages intended to be slightly more accessible. Some versions were delivered with a "pullman" style berth forward, while others utilized a traditional V-berth. The use of teak veneers and high-pressure laminates was standard, designed for durability in a marine environment. Because of the high coachroof, headroom is exceptional throughout the vessel, often exceeding 6' 6" in the main salon.

Known Issues & Buyer’s Checklist

Prospective buyers of a Coronado 45 must account for the age of the fiberglass and the specific construction techniques of the Whittaker era.

  • Window Seals: The large, iconic salon windows are the most common failure point. Over decades, the seals perish, leading to leaks that can rot the wooden bulkheads and cabinetry below.
  • Deck Delamination: Like many boats of this era, the decks are balsa-cored. Hardware that has not been re-bedded can allow moisture into the core, leading to soft spots, particularly around the mast step and the heavy stanchion bases.
  • Chainplate Inspection: The chainplates are under significant load given the heavy displacement of the boat; they should be inspected for crevice corrosion where they pass through the deck.
  • Engine Accessibility: While the engine room is large, the Perkins 4-236 (a common factory install) is often tucked under the cockpit sole. Verification of the cooling system and exhaust riser is essential, as these components are prone to corrosion in original 1970s installations.
  • Osmotic Blistering: While the hulls are thick, they were built before the widespread use of vinylester resins. A haul-out for a moisture meter test is recommended to check for "Coronado pimples" (osmotic blisters).

Community & Resources

Owners of these vessels are served by a dedicated community that bridges both the Coronado and Columbia brands. The most prominent technical resource is the Columbia Yacht Owners Association, which maintains an extensive library of original brochures, line drawings, and manual scans for the 45-foot hull. There are also active owner groups on Facebook and legacy technical wikis that focus on the specific restoration of Whittaker-era boats.

The Verdict

The Coronado 45 is a quintessential "lifestyle" cruiser that prioritizes living space and stability over racing prowess. It is an ideal candidate for a live-aboard couple or a family seeking a coastal cruiser with the interior volume of a much larger vessel.

Pros:

  • Massive Interior: Exceptional headroom and a private aft stateroom make it one of the best live-aboards in its price bracket.
  • Sturdy Hull: The William Tripp hull design is robust and capable of handling heavy seas with confidence.
  • Natural Light: Large salon windows provide excellent visibility and a bright living environment.

Cons:

  • High Windage: The tall profile makes maneuvering in tight marinas challenging without a bow thruster.
  • Light Air Sluggishness: Its heavy displacement requires significant wind or engine power to maintain speed.
  • Maintenance Intensive: The large windows and aging deck cores require diligent upkeep to prevent structural water damage.

Measurements

Construction & Hull

Construction Material
Fiberglass
Hull Type
Monohull Sailboat
Keel Type
Fin
Rudder
1x Skeg-Hung
Ballast
12300 lbs (Iron)
Displacement
25000 lbs
Water Capacity
100 gal
Fuel Capacity
70 gal

Dimensions

Length Overall (LOA)
45.25 ft
Waterline Length (LWL)
34.42 ft
Beam
12.33 ft
Draft
4.3 ft
Max Headroom
-
Air Draft
-
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

Rig Type
Masthead Sloop
P (Main Luff)
45 ft
E (Main Foot)
15 ft
I (Foretriangle Height)
52.1 ft
J (Foretriangle Base)
18.24 ft
Forestay Length (est)
55.2 ft
Sail Area
812 sqft

Calculations

Sail Area / Displacement (SA/D) Ratio
15.19
Ballast / Displacement Ratio
49.2
Displacement / Length Ratio (D/L) Ratio
273.69
Comfort Ratio
36.15
Capsize Screening Formula
1.69
Hull Speed
7.86 kn