Irwin 28 Mk IV Information, Review, Specs

Ted Irwin, a prolific designer and founder of Irwin Yacht and Marine Corporation, was known for a diverse design philosophy that catered to both racing enthusiasts and the burgeoning charter market, emphasizing comfort and practicality in his cruising designs. The Irwin 28 Mk IV embodies this ethos, providing a "fine coastal cruiser" ideal for sailors seeking a functional and livable boat.

History and Design

The Irwin 28 Mk IV was part of a long and evolving series of 28-foot models produced by Irwin Yachts, a company that began its prolific output in 1966, 9]. The Mk IV model, specifically, was built between 1976 and 1981. During this era, Irwin Yachts maintained its position as one of the largest sailboat producers in the United States, utilizing fiberglass construction, which was standard for production coastal cruisers in the 1970s. Ted Irwin's designs were synonymous with practical and livable boats for cruising, and the 28 Mk IV fit squarely within this philosophy.

While earlier Irwin 28 models primarily featured shallow draft full keels with centerboards, the Mk IV typically came with a fin keel and a skeg-hung rudder, though a keel/centerboard version was also available. This fin keel design offered improved maneuverability compared to full keel variants.

Sailing Performance and Handling

The Irwin 28 Mk IV is generally regarded as a well-mannered sailboat that performs competently in various conditions. Its fin keel contributes to splendid maneuverability, though with slightly less directional stability than a long keel design. Owners report that a well-maintained Irwin 28 can capably handle winds of 25-30 knots, suggesting a robust build for its size. It is often described as having "good manners". For a boat of its length, it is considered to have a slightly more speedy hull design compared to many similar sailboats.

Accommodations and Layout

While specific headroom figures for the Irwin 28 Mk IV are not consistently detailed in available specifications, the boat is generally considered to offer a good balance between sailing capability and interior space for a boat of its size. The interior layout typically includes a V-berth forward, a head, a salon area, and a galley. The construction was typical for a 1970s production coastal cruiser, with a one-piece molded fiberglass hull. Owners often find the accommodations to be a practical compromise, avoiding the cramped feeling of smaller 25-26 foot boats while providing sufficient space for coastal cruising.

Owner's Perspectives

Owners of the Irwin 28 Mk IV frequently praise its suitability as a coastal cruiser for those on a modest budget, appreciating its balance of size and functionality. Many consider it an ideal first boat or a comfortable step up from smaller vessels. The solid fiberglass hull is often cited as a strength, contributing to the boat's durability.

However, some common maintenance points and issues have been noted. Similar to other boats of its vintage, owners may encounter issues like the "keel smile," which refers to cracks around the keel joint, a common issue in some fiberglass boats of that era. Original deck fittings may also require re-bedding over time to prevent leaks. The Universal Atomic 4 engine was a common power plant for these boats, and while reliable, it may require significant maintenance or replacement in older models. Despite these potential maintenance items, the enduring loyalty of Irwin owners and the active online community underscore the lasting appeal and practicality of the Irwin 28 Mk IV.