Design and Construction
Holman’s design measures 8.53 meters overall and 6.71 meters on the waterline, with a beam of 2.59 meters. The hull is wooden, with a long keel and transom-hung rudder.
An iron ballast keel weighing 1,814 kilograms forms part of the boat’s 4,990-kilogram displacement, giving a ballast-to-displacement ratio of 36.35 percent. This pairing of an iron keel with a timber hull is the class’s defining structural feature, and it shapes how the boat ages. Sources differ on displacement in pounds, so the SailWiki figure in kilograms is used here.
The displacement-to-length ratio is 460.32, close to Yachtdatabase’s figure of 460. Yachtdatabase places the Sterling 28 among “ultra heavy cruisers”. A comfort ratio near 41 and a capsize screening value of 1.53 add to the picture of a stable, sober sea boat rather than a light-air performer. The theoretical hull speed is 6.29 knots, the accepted maximum for a displacement hull with this waterline length.
Rig and Handling
The Sterling 28 carries a masthead sloop rig. Period equipment guidance lists jib and genoa sheets measuring 8.5 meters at 10 mm diameter, a mainsheet of 21.3 meters, and spinnaker sheets of 18.8 meters. These sheet specifications come from Yachtdatabase. All are specified as 3/8-inch line.
The long-keel hull and transom-hung rudder favor predictable tracking over quick turning. Draft is 1.45 meters, increasing to about 1.55 meters under load according to Yachtdatabase. That relatively shallow draft allows the Sterling 28 to settle into marinas that deeper fin-keel boats can’t enter.
Accommodation and Intended Use
Within her 28-foot overall length and 8.5-foot beam, the Sterling 28 is a compact cruiser intended for shorthanded coastal and modest offshore work rather than charter accommodation. Her 1,814-kilogram iron keel and 4,990-kilogram wooden hull underscore the weight carried within those modest dimensions.
The wetted surface is roughly 20 square meters, reflecting the painting and antifouling burden that comes with a full-length keel and wooden bottom.
Known Issues
The Sterling 28’s main vulnerabilities follow directly from her construction: a wooden hull mated to an iron keel. Iron ballast in a timber boat invites electrolytic decay and keel-bolt corrosion where the materials meet. The wooden structure also demands continuing vigilance against rot and fastening failure. On any sixty-year-old example, this combination is the chronic concern.
Although robust, the long keel and transom rudder concentrate loads at the rudderstock and keel root that a later fin-and-skeg layout would distribute.
Verdict
The Sterling 28 is a small, scarce, traditionally built Holman cruiser. Her appeal lies in her pedigree and heavy, reassuring numbers rather than modern performance. She suits an owner who values wooden-boat maintenance and understands iron-keel timber construction.
Pros
- Long-keel, transom-rudder hull with a shallow 1.45 m draft for marina access
- Iron ballast providing a 36% ballast ratio and a stable 1.53 capsize screening value
- Only 19 built, giving the class genuine collector scarcity
Cons
- The wooden hull and iron keel invite corrosion and rot at their interface
- Ultra-heavy displacement limits light-air speed and maneuverability
- Minimal support for parts, layouts, or modern refit data
