Design and Construction
Brett gave the Rival 38 fuller ends than his previous designs, a choice that reshaped both the underwater profile and the interior. In the aft-cockpit version, the added volume made room for a stern cabin beneath the companionway—something his earlier layouts couldn’t accommodate.
The hand-laid hull is solid fiberglass, with lead ballast encapsulated as an integral part of the structure rather than bolted on. This construction lowers the center of gravity and gives the boat good initial stability, helping her stand up to her canvas in a breeze.
At 17,280 pounds displacement on a 29-foot 6-inch waterline, the Rival 38 has a D/L ratio of 300.49, placing her firmly in the heavy-displacement cruising category. Here, that mass is a virtue rather than simply a penalty. The boat is less sensitive to the added weight of cruising gear and provisions, retaining her waterline and performance when loaded. Her motion in a seaway is also more comfortable and predictable than that of lighter craft.
A Comfort Ratio of 33.30 and Capsize Screening Formula of 1.74 reinforce the picture: this is a moderate bluewater cruiser intended for passage-making and seaworthiness rather than sparkling light-air performance.
Rig, Keel, and Handling
The standard aft-cockpit Rival 38 is a masthead sloop, although some boats were rigged as cutters with an inner forestay and staysail. The center-cockpit version could instead be ketch rigged.
The Rival 38 has a fin keel and skeg-hung rudder. It carries 745 square feet of sail on a 48-foot 5-inch foretriangle, giving a SA/D of 17.90 and confirming modest sail power relative to its weight. The design is known for seaworthiness, and its defining heavy displacement makes it exceptionally well suited to offshore passages.
A hull speed of 7.28 knots is the practical ceiling under normal sail. The boat was clearly drawn for dependable ocean work rather than regatta pace.
Accommodations
The standard Rival 38A carried an aft cockpit with a two-cabin arrangement. Forward, it had a double berth, sometimes fitted with an infill cushion to create a wider bunk. The saloon had two settees that could convert to berths, with optional pipe cots above. A galley and navigation station separated the main living spaces from the aft cabin, which could be arranged with either two single berths or a double.
The center-cockpit Rival 38C was also offered. It generally provided more headroom and storage in the aft cabin and was often arranged with three cabins. Its layout included a forward double, saloon, galley, navigation station, aft heads, and an aft cabin with the same choice of two singles or a double.
Few center-cockpit boats were built, so aft-cockpit sloops and cutters dominate the surviving fleet.
Machinery and Cruising Capacity
A 38-horsepower Perkins 4108 diesel was the standard engine. Fuel capacity is 130 gallons, while water capacity is 110 gallons. Those figures suit the boat’s long-range cruising intent and its ability to carry cruising stores without being unduly affected by the extra weight.
Known Issues and Service History
Encapsulated ballast is one of the Rival 38’s structural strengths, but it also has a limitation. Any water intrusion into the hull matrix around the ballast can’t be inspected externally as it can with a bolted-on keel. The builder’s own notes describe the lead or iron as integral to the hull rather than as a separable component.
The service history of these 63 boats includes a circumnavigation completed in 2018 by the Rival 38 Wandering Dream. That achievement is evidence of the design’s endurance rather than any systemic weakness.
Refits and Ownership
Production continued for some years after 1977, but with only 63 examples built, the Rival 38 remains a low-volume yet coherent Brett design. The aft-cockpit, two-cabin layout is the version most often encountered, and the fuller-ended hull that defines the class is also what makes its aft cabin possible.
Owners taking one on should plan around its heavy-displacement character. It favors load-carrying stability and predictable motion over light-air speed.
The Verdict
The Rival 38 is a serious offshore cruiser from Peter Brett’s mature period. It trades light-air speed for load-carrying stability and predictable motion. Its scarcity means a careful survey matters more than market comparison, but its encapsulated ballast and solid fiberglass hull provide foundations a long-distance sailor can trust.
Pros
- Encapsulated ballast and a solid GRP hull provide a low center of gravity and good initial stability.
- Heavy displacement and a D/L ratio of 300.49 allow the boat to carry cruising loads without losing its waterline.
- A Comfort Ratio of 33.30 and CSF of 1.74 point to a predictable bluewater character.
- Fuller ends make room for a genuine aft cabin beneath the companionway.
Cons
- A SA/D of 17.90 limits light-air performance.
- Only 63 were built, so there are fewer examples and less familiarity with spares than for mass-market rivals.
- Encapsulated ballast hides any internal corrosion path from external view.
