Irwin Mini-Ton Information, Review, Specs

Boat drawing
Make
Irwin
Model
Mini-Ton
Number Built
Production Year(s)
1978 - ??

The Irwin Mini-Ton is a spirited and compact sailboat, emblematic of the Mini-Ton racing class, designed for sailors seeking performance in a smaller package. With a length overall of just over 20 feet, this fractional sloop was conceived by the prolific designer Ted Irwin and built by his company, Irwin Yachts, known for producing a wide array of fiberglass sailing vessels. This model encapsulates Irwin's interest in racing while offering a design that could appeal to both competitive sailors and those looking for a nimble weekender.

InfoView listings

History and Design

Production of the Irwin Mini-Ton commenced in 1978. Designed by Irwin/Rogers, this model emerged from an era when Ted Irwin, founder of Irwin Yachts, actively pursued his passion for racing, translating it into several performance-oriented boats. The Mini-Ton class itself was an offshore sailing class governed by the International Offshore Rule (IOR), which encouraged the development of compact yet capable racing yachts. The Irwin Mini-Ton is noted to be similar in design to the Irwin Free Spirit, suggesting a shared lineage or design philosophy within the builder's smaller offerings. The design likely prioritized a balance of speed and maneuverability to conform to the specific handicapping rules of the Mini-Ton racing circuit.

Sailing Performance and Handling

The Irwin Mini-Ton is configured as a fractional sloop, a rigging type often favored for its adjustability and performance capabilities, particularly upwind. A notable feature of its design is the lifting keel, which provides a significant advantage for shallow water access and trailerability. This allows the boat to reduce its draft from a maximum of 4.5 feet to a mere 0.8 feet, enhancing versatility for cruising in shallower areas or dry storage. With a length overall of 20.81 feet and a waterline length of 16.5 feet, the Mini-Ton is designed to be lively and responsive, characteristic of boats built to the Mini-Ton racing rule. Its lightweight displacement of 1900 lbs, coupled with a sail area of 206 square feet, suggests that it is intended for nimble handling and can provide an engaging sailing experience. Owners have found its trailerability and ability to access skinny water particularly appealing, indicating its practicality beyond just racing.

Accommodations and Layout

Given its compact size, the interior accommodations of the Irwin Mini-Ton are inherently spartan, typical for a sailboat of its length designed with a performance emphasis. While specific layout details are limited in available data, a 20-foot Mini-Ton is generally configured to offer basic shelter and minimal amenities. The interior likely features a V-berth forward, providing the primary sleeping area, and possibly two small settees in a main cabin area, which might serve as additional berths or seating. Headroom would be restricted, and an enclosed head or a dedicated galley would be either absent or extremely rudimentary, often consisting of a portable toilet and a simple cooler or sink. Storage space would be at a premium, likely confined to under-berth areas. The emphasis of such a design is primarily on sailing performance and a simple, functional space for short trips or overnight stays, rather than extended cruising comfort.

Owner's Perspectives

Owners of the Irwin Mini-Ton often appreciate its practical aspects, such as its trailerability and its shallow draft with the lifting keel, which allows for access to "skinny water". These attributes make it an attractive option for sailors looking for a compact vessel that can be easily transported and launched, as well as navigated in diverse coastal environments. The boat has been noted as a suitable platform for refurbishment, suggesting its solid underlying construction and enduring appeal as a project boat or for teaching new sailors. While detailed collective owner feedback on specific strengths or common issues is not widely documented, the continued presence of these boats in the used market and owner communities suggests a lasting appreciation for their design and utility.

Measurements

Construction & Hull

Construction Material
Fiberglass (Solid)
Hull Type
Monohull Sailboat
Keel Type
Lifting
Rudder
1x —
Ballast
770 lbs
Displacement
1900 lbs
Water Capacity
-
Fuel Capacity
-

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
Fractional Sloop
P (Main Luff)
24.5 ft
E (Main Foot)
8.84 ft
I (Foretriangle Height)
24.5 ft
J (Foretriangle Base)
8 ft
Forestay Length (est)
25.77 ft
Main Sail Area
108.29 sqft
Foretriangle Sail Area
98 sqft
Total Sail Area (Reported)
206 sqft
Total Sail Area (Calc)
206.29 sqft

Dimensions

LOA
20.81 ft
LWL
16.5 ft
Beam
8 ft
Draft
4.5 ft
Max Headroom
-
Air Draft
-

Calculations

Hull Speed
5.44 kn
Pounds per Inch Immersion
471.65