The Capo 30 is a high-performance racer-cruiser that represents a significant chapter in West Coast yacht design, emerging from the collaboration between the legendary naval architect Carl Schumacher and the composite specialists at Westerly Marine Inc. in Santa Ana, California. Launched in the mid-1980s, the Capo 30 was engineered to dominate the Midget Ocean Racing Club (MORC) circuit while remaining versatile enough for short-handed coastal cruising. Unlike the heavy, glass-reinforced plastic cruisers produced by the British builder of a similar name, this American-made vessel utilized advanced construction techniques of the era, including vacuum-bagging and high-quality cores, to achieve a strength-to-weight ratio that remains competitive in modern PHRF (Performance Handicap Racing Fleet) fleets.
Capo 30 Information, Review, Specs

- Make
- Capo
- Model
- 30
- Builder
- Westerly Marine
- Designer
- Carl Schumacher
- Number Built
- 8
- Production Year(s)
- 1984 - 1985
Sailing Performance & Handling
The Capo 30 is defined by its Carl Schumacher pedigree, characterized by a hull form that balances low wetted surface area with high initial stability. With a Displacement-to-Length (D/L) ratio of approximately 148, the boat sits firmly in the light-displacement category, allowing it to transition from displacement speeds to planing modes in moderate-to-heavy air. Its Sail Area-to-Displacement (SA/D) ratio, often calculated in the 23 to 25 range depending on the rig configuration, marks it as a "light air weapon" capable of ghosting past heavier cruisers in the fickle winds of the California coast.
Handling is reported to be exceptionally balanced; the fractional rig allows for precise mainsail trimming to control heel, while the deep, high-aspect-ratio fin keel and spade rudder provide surgical tracking. Owners often describe the boat as feeling like a large dinghy—highly responsive to weight shifts and sail trim adjustments. According to historical race logs and design notes found via Carl Schumacher’s design portfolio, the Capo 30 was specifically optimized for upwind efficiency, featuring narrow shroud tracks that allow for tight sheeting angles. Off the wind, the boat is known for its "forgiving" nature compared to other 1980s ultra-light boats, maintaining steerage even when pressed hard under a large symmetric spinnaker.
Interior Comfort & Variations
For a vessel optimized for racing, the Capo 30 offers a surprisingly functional interior that accommodates a crew of four for overnight coastal hops. The layout is a classic open-plan arrangement designed to maximize structural integrity, often utilizing the bulkheads as part of the "I-beam" strength of the hull. The interior usually features a V-berth forward, a compact galley with a two-burner stove, and two long settees that double as sea berths.
Materials inside reflect the high-performance ethos of Westerly Marine, with a focus on weight savings. Teak trim is present but minimalist, and many surfaces are finished in white gelcoat or light laminates to keep the cabin bright. Variations are common in the Capo 30 fleet, as several hulls were custom-finished to suit specific owners. While the "Standard" version included a modest head and a small navigation station, some "Race-Lite" versions were delivered with stripped-out interiors to minimize the moment of inertia. Its sibling, the Capo 26, shares a similar design language but lacks the standing headroom and extended cruising amenities found in the 30-foot model.
Popular Mentions & Media
The Capo 30 maintains a "cult" status within the San Francisco and Southern California racing communities. It is frequently featured in the "Classy Classifieds" and race reports of Latitude 38, where it is often cited as a benchmark for 30-foot performance. The model gained notoriety in the 1980s and 90s for its consistent podium finishes in the MORC Internationals and regional "Midwinter" series. Because Westerly Marine transitioned into building world-class custom racing machines and Super 12 Cup yachts, the Capo 30 is often viewed as the "production" ancestor to some of the most advanced carbon-fiber boats in the United States.
Known Issues & Buyer’s Checklist
Prospective buyers should approach a Capo 30 with a focus on its high-tech (for the time) construction. Because Westerly Marine utilized balsa and foam coring to achieve its light displacement, the primary concern is core integrity.
- Deck and Hull Coring: Use a phenolic hammer to check for delamination around high-stress areas like the chainplates, stanchion bases, and the mast step. Moisture ingress in these areas can lead to soft spots that are costly to repair.
- Keel Stub Integrity: Given its history as a hard-pressed racer, the keel-to-hull joint (the "smile") should be inspected for signs of stress or movement.
- Rigging and Chainplates: The fractional rig puts significant tension on the backstay and shrouds. Inspect the stainless steel chainplates for crevice corrosion, especially where they pass through the deck.
- Rudder Bearings: The high-aspect spade rudder can develop "slop" over time. Check the bushings and bearings for play, as a precise helm is critical to the boat's handling characteristics.
Community & Resources
The community for the Capo 30 is largely integrated into the broader "Schumacher Design" fan base. While there is no longer a dedicated factory owner's association, technical information is often shared through the Carl Schumacher Designs archives. Owners also frequently congregate on regional performance forums to discuss PHRF ratings and rig tuning.
The Verdict
The Capo 30 is an uncompromising performance machine that offers a level of build quality and design sophistication rarely found in 30-footers of its era. It is best suited for the sailor who prioritizes speed and tactical handling over "condo-style" interior volume.
Pros:
- Exceptional Speed: Outperforms most modern 30-foot cruisers, especially in light to moderate air.
- High-End Construction: Built by Westerly Marine, a yard synonymous with advanced composites.
- Balanced Handling: Forgiving and predictable, even when sailing at the limit.
Cons:
- Maintenance Intensive: Core-related issues require a vigilant owner and careful survey.
- Minimalist Interior: Lacks the creature comforts (like a full shower or enclosed aft cabin) found in contemporary cruisers.
- Niche Market: Can be more difficult to resell than a standard production boat due to its specialized racing nature.
Measurements
Construction & Hull
- Construction Material
- Fiberglass
- Hull Type
- Monohull Sailboat
- Keel Type
- Fin
- Rudder
- 1x Spade
- Ballast
- 3000 lbs (Lead)
- Displacement
- 7200 lbs
- Water Capacity
- -
- Fuel Capacity
- -
Dimensions
- Length Overall (LOA)
- 30 ft
- Waterline Length (LWL)
- 25 ft
- Beam
- 10.33 ft
- Draft
- 5.43 ft
- Max Headroom
- -
- Air Draft
- -
Rig & Sails
- Rig Type
- Masthead Sloop
- P (Main Luff)
- 36 ft
- E (Main Foot)
- 11.5 ft
- I (Foretriangle Height)
- 42 ft
- J (Foretriangle Base)
- 12.8 ft
- Forestay Length (est)
- 43.91 ft
- Sail Area
- 476 sqft
Calculations
- Sail Area / Displacement (SA/D) Ratio
- 20.42
- Ballast / Displacement Ratio
- 41.67
- Displacement / Length Ratio (D/L) Ratio
- 205.71
- Comfort Ratio
- 18.72
- Capsize Screening Formula
- 2.14
- Hull Speed
- 6.7 kn