Design and Construction
The hull is fiberglass, and the broader lineage from the Cat Ketch Corporation partnership saw these boats transition from cold-molded mahogany to Airex-cored fiberglass hulls, the 38 among that line. Her ballast ratio of 42% is higher than 62% of all similar sailboat designs, and with a displacement-length ratio of 149 she is categorized among "light racers" — 88% of comparable designs are heavier. The length-to-beam ratio of 3.28 makes her slimmer than 54% of similar sailboats. None of this is contradiction so much as calibration: the 38 carries enough ballast low to steady her, but keeps displacement modest enough that the SA/D ratio of 17.10 and a theoretical hull speed of 7.8 knots remain accessible. The wetted surface of about 38 square meters is a practical maintenance datum for any owner planning bottom paint cycles.
Rig and Handling
Built with a ketch rig and an unstayed concept from the Cat Ketch Corporation line, the 38 draws on a simplicity of sail plan that defines the model. Her draft runs about 1.37 to 1.47 meters dependent on load, letting her into shallow marinas that deeper fin-keel cruisers must avoid. The capsize screening value is 1.96, a number that sits in credible offshore-survival territory for a boat of this type. The Motion Comfort Ratio of 22.0 is more comfortable than only 18% of similar sailboat designs — a reminder that the light-racer categorization carries a trade in absolute smoothness against heavier rivals, even if her beam and ballast keep her composed.
Accommodations
One established interior fact stands from period description: the headroom is above average for a boat of this length and configuration. Beyond that single quantified comfort point, the sources are silent on berths, galley, or joinery, so no layout claims can be made. What can be said is that the above-average headroom, paired with the 11.5-foot beam, suggests a cabin volume tuned for standing comfort rather than merely curled quarters, consistent with a cruising ketch of the early eighties.
Known Issues
The documented record supplies no defect reports, structural failures, or systemic weaknesses for the Herreshoff 38 Cat Ketch. The only maintenance-relevant flat fact is the wetted-surface area of about 38 square meters, which governs antifouling scope. Owners shopping with an eye to the Airex-cored fiberglass hull from the Cat Ketch lineage should note that the sources here describe the material transition but record no core-related failures.
Refits and Ownership
No refit specifics, equipment campaigns, or ownership-cost data appear in the sourced material. The boat's simple ketch rig from the unstayed Cat Ketch concept implies fewer standing-rigging interfaces than a stayed masthead sloop, but the sources do not state this as fact, so it remains outside established claim. Practical ownership context is limited to the documented dimensions, ratios, and the 38-square-meter bottom area that defines one recurring upkeep task.
The Verdict
The Herreshoff 38 Cat Ketch is a deliberately light, ballasted cruiser with a ketch rig and shallow-ish fin keel, designed by Halsey Chase Herreshoff in the early eighties. Her ratios show a boat brighter on her feet than most peers and steadier than her displacement alone would suggest, with headroom that punches above the class average. The silence of the record on defects is itself a kind of testimony, though the thin accommodation documentation means a buyer must inspect in person rather than trust a spec summary.
Pros
- Ballast ratio of 42%, higher than 62% of similar designs, with 5,500 lb lead ballast in 13,080 lb displacement
- Draft of 1.37–1.47 m permits shallow-marina access
- Above-average headroom for the type
- Capsize screening value of 1.96
Cons
- Motion Comfort Ratio of 22.0 beats only 18% of similar sailboats
- Slimmer and lighter than most peers, which may trade absolute smoothness
- Documented interior detail beyond headroom is absent from authoritative sources
