Wavelength 30 Information, Review, Specs

Wavelength 30 Drawing
Make
Wavelength
Model
30
Builder
W. D. Schock Corp.
Designer
Paul Lindenberg
Number Built
10
Production Year(s)
1980 - 1981

The Wavelength 30 represents a specific era in American yacht design where the "performance-cruiser" label meant a boat that could genuinely win a weekend regatta without sacrificing basic amenities. Designed by the renowned Gary Mull and built by W.D. Schock in the mid-1980s, the Wavelength 30 was positioned as a formidable competitor in the burgeoning PHRF racing scene. It was developed alongside its smaller sibling, the Wavelength 24, as part of a concerted effort by W.D. Schock to offer a more modern, faster alternative to the heavier, traditional cruisers of the time. While the Wavelength series never reached the massive production numbers of the J/30, it remains a "cult classic" among West Coast sailors who prize its Gary Mull pedigree and balanced handling. The model is officially recognized as part of the builder's historical portfolio, as noted by the W.D. Schock Corporation.

Sailing Performance & Handling

The Wavelength 30 is defined by its responsiveness and its ability to punch above its weight in light-to-moderate air. Gary Mull designed the hull with a relatively narrow waterline and a fine entry, allowing it to track exceptionally well upwind. With a PHRF rating typically ranging between 105 and 117, it is competitive against contemporary designs like the J/30 or the Olson 29. The boat’s displacement-to-length ratio is moderately light, which ensures it powers up quickly in a breeze, yet it possesses enough ballast to remain stable when the wind exceeds 15 knots.

Owners and testers often note that the Wavelength 30 feels "active" underfoot. Unlike heavier cruisers that require significant force to change course, the 30 responds to subtle tiller adjustments. Its fractional rig provides versatility, allowing for easy depowering of the mainsail through backstay tension—a feature highly valued by racing crews. According to technical assessments often cited by the manufacturer, the boat was engineered to plane under the right conditions downwind, a characteristic that was ahead of its time for a 30-foot cruiser-racer in the mid-80s.

Interior Comfort & Variations

While the Wavelength 30 was built for speed, the interior was designed to accommodate a crew of four to six for overnight trips. The layout is surprisingly airy for a performance-oriented hull, featuring a standard V-berth forward, a central salon with settees on either side, and a modest galley. To save weight, the interior uses a combination of molded fiberglass liners and wood accents, rather than heavy solid-wood cabinetry.

The sibling models on this hull are limited, as the 30-foot mold was primarily used for this specific configuration. However, Schock did offer variations in the cockpit and deck layout to suit different racing preferences. Some models feature a more "stripped-out" interior for dedicated grand-prix racing, while others retained the full "cruising" package, which included a private head and a small aft quarter berth. The headroom is sufficient for most adults but tapers off moving forward, a common trade-off for the boat's sleek, low-profile cabin house.

Known Issues & Buyer’s Checklist

Prospective buyers of a Wavelength 30 should focus their inspection on the structural integrity of the deck and the high-load areas associated with racing.

  • Deck Core Integrity: Like many boats of this era, the Wavelength 30 uses a cored deck. High-stress areas around the mast step and the genoa tracks should be checked for "soft spots" or delamination, which often indicates water intrusion through unsealed hardware.
  • Rudder Bearings: Given the boat’s age and performance nature, the rudder bearings frequently show wear. Excessive "play" or vibration in the tiller while under sail suggests the bearings or the rudder stock itself may require service.
  • Standing Rigging & Chainplates: Because many of these boats were campaigned hard in regattas, the standing rigging is often at the end of its fatigue life. Particular attention should be paid to the chainplate attachments for signs of stress cracking in the fiberglass.
  • Keel-to-Hull Joint: Inspect the "smile" at the leading edge of the keel. While W.D. Schock’s construction was generally robust, the stresses of heavy-weather racing can cause minor movement in the keel bolts, requiring tightening or re-bedding of the joint.

Community & Resources

The primary hub for technical data and historical context for this model is the W.D. Schock Corporation, which maintains a legacy section for their out-of-production models. While no longer in active production, the boat shares a lineage with the Schock 35, and many owners find technical overlap within the broader Schock sailing community. There are no longer active one-design class associations dedicated solely to the Wavelength 30, but it remains a staple in PHRF fleets across the United States.

The Verdict

The Wavelength 30 is a "sailor’s sailboat" that offers a rewarding helm experience and genuine racing potential for a fraction of the cost of modern sportboats.

Pros:

  • Excellent light-air performance and upwind tracking.
  • Versatile fractional rig that is easy to tune for different wind ranges.
  • Functional interior that allows for comfortable weekend cruising.
  • High "bang-for-buck" ratio in the used market.

Cons:

  • Cored deck construction requires diligent maintenance to avoid rot.
  • Limited headroom compared to pure cruising designs of the same length.
  • One-design racing fleets are now rare, forcing owners into PHRF handicap racing.

Measurements

Construction & Hull

Construction Material
Fiberglass
Hull Type
Monohull Sailboat
Keel Type
Fin
Rudder
1x Spade
Ballast
3100 lbs
Displacement
7000 lbs
Water Capacity
-
Fuel Capacity
-

Dimensions

Length Overall (LOA)
29.95 ft
Waterline Length (LWL)
26.75 ft
Beam
10 ft
Draft
5.25 ft
Max Headroom
-
Air Draft
-
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

Rig Type
Masthead Sloop
P (Main Luff)
36 ft
E (Main Foot)
11 ft
I (Foretriangle Height)
41 ft
J (Foretriangle Base)
12 ft
Forestay Length (est)
42.72 ft
Sail Area
444 sqft

Calculations

Sail Area / Displacement (SA/D) Ratio
19.41
Ballast / Displacement Ratio
44.29
Displacement / Length Ratio (D/L) Ratio
163.26
Comfort Ratio
18.18
Capsize Screening Formula
2.09
Hull Speed
6.93 kn