fin-keel

Express 37

Alsberg Brothers Boatworks · 1984–1988 · Sloop rig

Express 37
Express 37
LOA37.08'
Beam11.5'
Draft7.25'
Displ.4.9t
Rigsloop
Hullfiberglass

Bluewater Evidence · Bluewater Capable

35% confidence

The first three Express 37 hulls built swept the top three class positions in the 1985 TransPac Race, a genuine offshore ocean race from Los Angeles to Honolulu, real design-level evidence of the boat's capability in open-ocean conditions under racing loads. No specific named cruising circumnavigation or passage is documented in current sources; this design was built and used primarily for offshore racing rather than cruising.

Known Issues

Mast-step bulkhead (early hulls)moderatePassageBoats editorialHulls before #20

The bulkhead behind the mast on early hulls was bonded to the keel floor with 3M 5200 adhesive alone; this bond flexed over time. Hulls from #20 onward were retrofitted with fiberglass tabbing.

Inspection: On hulls numbered before 20, confirm whether the mast-step bulkhead has been retrofitted with fiberglass tabbing, and inspect the bond for flex or separation.

Mast (hydraulic hose routing)moderatePassageBoats editorialAll years, boats with hydraulic backstay/vang fittings

Hydraulic hose routed through the mast at deck level caused cracking after roughly 5 to 6 years on some boats; addressed with a reinforcing sleeve and relocated fitting.

Inspection: Inspect the mast at deck level for cracking around hydraulic hose penetrations, and confirm whether the reinforcing sleeve fix has been applied.

Overview

Carl Schumacher designed the Express 37 in 1984 for Terry Alsberg’s Alsberg Brothers Boatworks in Santa Cruz, following the success of the smaller, similarly race-bred Express 27. The goal was explicit: a boat that excelled on the reaching and running legs of long ocean races, not a general-purpose cruiser. It delivered immediately, with the first three hulls sweeping the top three class positions in the 1985 TransPac Race.

Design and Construction

At just 9,800 lb displacement with a deep 7.25 ft fin keel and nearly 47 percent ballast ratio, this is a genuinely light, race-oriented hull, reflected in a high sail-area-to-displacement ratio and correspondingly low comfort ratio compared to the cruising designs that make up most of this catalog. Construction quality is well regarded independently, not just by the builder: Alsberg combined hand-layup with vacuum-bagging, balsa coring, and vinylester resin to resist blistering, built to ABS and Lloyd’s standards, and inspected examples show no structural failures with gelcoat and nonskid holding up well over time. Sixty-five were built between 1984 and 1988; a later Mk II variant (about 10 boats, after hull #58) softened the interior toward cruising use.

Under Sail

This is a genuinely fast boat: testing found it carrying a 140 percent genoa through 2-to-3-foot swells in 12-17 knot winds without excessive heel, and holding 9-10 knots downwind, sailing to its PHRF rating in most conditions. The design’s real offshore credentials come from racing, not cruising: the 1985 TransPac sweep is the headline result, and the boats have proven genuinely tough in practice, with one surviving a whale strike with only a bent keel and another an Alcatraz grounding with minimal damage beyond the keel.

Buyers Notes

On hulls numbered before 20, confirm whether the mast-step bulkhead has been retrofitted with fiberglass tabbing; the original 5200-only bond is known to flex over time. Check the mast at deck level for cracking around any hydraulic hose penetration, a known issue on boats fitted with hydraulic backstay or vang systems. Confirm which keel a specific hull has, since a shallower option exists alongside the standard 7.25 ft fin, and whether it’s an earlier racing-focused interior or the later Mk II’s more cruising-oriented layout.

Recommended In

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  1. [1]SpecificationsEXPRESS 37 - SailboatData.com- Dimensions, displacement, ballast, sail area, hull type, rig, designer, builder, production years/hull count (65, 1984-1988), and a later Mk II variant with a more cruising-oriented interior. Fetched via browser automation.
  2. [2]ReviewExpress 37 Nails Performance - Practical Sailor- Independent construction-quality and known-issues review: mast-step bulkhead flexing on early hulls, wood bulkhead thickness increase, deck-track cracking under Kevlar sail loads, mast cracking from hydraulic hose routing; documents the 1985 TransPac sweep and two real incidents (a whale strike, an Alcatraz grounding) with only minor damage. Fetched directly, not WebSearch synthesis.
  3. [3]BookThe Best Used Boat Notebook (Editors of Practical Sailor)- Source of this boat's inclusion via data/book-lists.json.
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