IRWIN 28 MK IV

Main

Appendages
Fin with rudder on skeg
Construction
FG
First built hull
1976
Hull type
Monohull
Last built hull
1981
Model
IRWIN 28 MK IV
Sailboat builder
Irwin Yachts
Sailboat designer
Ted Irwin

Dimensions

Ballast Type
Lead
Ballast weight
1451.0
Beam
2.74
Displacement
3538.0
Draft
1.37
Max Draft
1.37
Overall length
8.66
Waterline length
7.01

Sails

E
2.97
Est. Forestay Length
11.86
Fore area
20.62
I
11.28
J
3.66
Mainsail area
14.34
P
9.65
Total area
35.02

Engine

Performance

Ballast ratio
41.03
Capsize Screening Formula
1.82
Comfort Ratio
26.22
Critical hull speed
6.43
Displacement-length ratio (DLR)
286.2
Upwind sail area to displacement
15.39

Accomodation

The IRWIN 28 MK IV is a popular sailing boat that was manufactured by the American company, Irwin Yachts, in the 1970s and 1980s. It is a well-built and sturdy vessel that offers a comfortable cruising experience.

Here are some key features and specifications of the IRWIN 28 MK IV:

1. Design: The boat was designed by Ted Irwin, a renowned naval architect, known for his innovative and functional designs. The IRWIN 28 MK IV features a moderate displacement hull with a fin keel and a skeg-mounted rudder, providing good stability and maneuverability.

2. Dimensions: The boat has an overall length of 28 feet (8.53 meters) and a beam of 10 feet (3.05 meters). It has a draft of 4 feet (1.22 meters), which allows it to navigate in shallow waters while maintaining good sailing performance.

3. Accommodation: The IRWIN 28 MK IV offers a spacious and comfortable interior layout. It typically has a V-berth forward, a main salon with settees that can convert into berths, a galley with a stove, sink, and icebox, and a head compartment with a marine toilet. The boat can accommodate up to six people for overnight stays.

4. Sailing Performance: The IRWIN 28 MK IV is known for its good sailing performance. It has a sail area of around 400 square feet (37 square meters) with a masthead sloop rig. The boat is relatively easy to handle and can be sailed single-handedly or with a small crew.

5. Construction: The boat is constructed using fiberglass, which provides durability and low maintenance. The hull and deck are typically made of solid fiberglass, ensuring strength and resistance to osmosis.

6. Reputation: The IRWIN 28 MK IV has gained a reputation as a reliable and seaworthy cruising boat. It is often praised for its comfortable interior, good sailing characteristics, and overall build quality.

Overall, the IRWIN 28 MK IV is a well-regarded sailing boat that offers a combination of comfort, performance, and durability. It is suitable for coastal cruising and can handle a variety of weather conditions.

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