Irwin Avanti 42 Information, Review, Specs

Boat drawing
Make
Irwin
Model
Avanti 42
Number Built
Production Year(s)
1975 - 1978

The Irwin Avanti 42 is a substantial cruising sailboat, designed by the prolific Ted Irwin and built by Irwin Yachts in the United States from 1975 to 1978. With a length overall of 42.5 feet, this monohull was conceived as a comfortable and practical vessel, embodying the builder's philosophy of creating livable boats for extended cruising and liveaboard lifestyles. Distinguished by its keel/centerboard hull design, the Avanti 42 offers a unique blend of offshore capability and shallow-water access, appealing to those seeking versatility in their voyaging.

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History and Design

The Irwin Avanti 42 emerged during a period of significant production for Irwin Yacht and Marine Corporation, a company founded by Ted Irwin in St. Petersburg, Florida. From its inception in 1966, Irwin Yachts became a prominent producer of fiberglass sailboats, characterized by their robust fiberglass construction. Ted Irwin's design philosophy was notably diverse, encompassing both performance-oriented vessels and those tailored for comfort in cruising, including for the Caribbean yacht charter market. The Avanti 42, introduced in 1975, reflects this latter emphasis, featuring a slightly more spacious hull design aimed at maximizing interior volume and comfort. The boat's defining characteristic, its keel/centerboard configuration, provided a strategic advantage by combining enhanced directional stability with the ability to navigate shallower waters—a hallmark of design for adaptable cruising.

Sailing Performance and Handling

The Irwin Avanti 42, with its masthead sloop rig, offers sailing characteristics well-suited to its cruising brief. Calculations based on its reported sail area of 852 square feet and a displacement of 26,000 pounds yield a Sail Area to Displacement ratio of approximately 15.52. This suggests a moderately powered vessel, capable of respectable performance without being overly sensitive in lighter winds. Its Ballast to Displacement ratio, around 0.307, indicates a solid, stable platform, though not exceptionally stiff, contributing to a comfortable motion in a seaway. With a Displacement to Length ratio of approximately 269.3, the Avanti 42 falls into the category of a heavier cruiser, prioritizing comfort and load-carrying capacity over outright speed. Her theoretical hull speed is calculated at 7.94 knots. The centerboard design allows for a minimum draft that facilitates access to anchorages often inaccessible to fixed-keel vessels of similar size, while providing deeper draft and improved upwind performance when deployed.

Accommodations and Layout

While specific interior headroom for the Avanti 42 is not widely published, the boat's design philosophy, emphasizing comfort and practicality for extended cruising, suggests a well-appointed and spacious interior for a vessel of its era., 3] Given its generous beam of 13.33 feet and "spacy hull design," the Avanti 42 was likely configured to offer comfortable living arrangements, typical of a 1970s cruising yacht. This would generally include a forward V-berth cabin, a main salon with settees and a dining area, a functional galley for meal preparation, and a dedicated head compartment. Storage capacity and ventilation were typically priorities for Irwin designs, aiming to enhance the liveaboard experience. The substantial water capacity of 270 gallons further underscores its design for extended periods aboard.

Owner's Perspectives

Owners of Irwin Avanti 42s often appreciate the boats for their solid construction and comfortable cruising capabilities. There is a strong and active online community of Irwin owners, reflecting the enduring appeal and practicality of these vessels. Common strengths frequently highlighted include their spacious interiors and robust fiberglass hulls. As with many older fiberglass yachts, the Avanti 42 can be a practical candidate for restoration or repowering projects, offering a capable cruising platform at an accessible price point in the used boat market., 15] While generally regarded as reliable, some owners have reported instances of centerboard loss, a specific consideration for this model given its keel/centerboard configuration.

Measurements

Construction & Hull

Construction Material
Fiberglass (Solid)
Hull Type
Monohull Sailboat
Keel Type
Centerboard
Rudder
1x —
Ballast
8000 lbs
Displacement
26000 lbs
Water Capacity
270 gal
Fuel Capacity
170 gal

Engine

Engine Make
Engine Model
Engine Type
Engine HP
Engine Count
1
Drive Type
Fuel Type
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

Rig Type
Masthead Sloop
P (Main Luff)
-
E (Main Foot)
-
I (Foretriangle Height)
-
J (Foretriangle Base)
-
Forestay Length (est)
-
Main Sail Area
-
Foretriangle Sail Area
-
Total Sail Area (Reported)
852 sqft
Total Sail Area (Calc)
-

Dimensions

LOA
42.5 ft
LWL
35.08 ft
Beam
13.33 ft
Draft
4.33 ft
Max Headroom
-
Air Draft
-

Calculations

Hull Speed
7.94 kn
Pounds per Inch Immersion
1