Soverel 36 CB — Information, Review, Specs

Mark Soverel·1975 – 1984·~14 hulls·Soverel Marine
Soverel 36 CB drawingBuilder drawing
Hull type
Monohull · centerboard
Rig
Cutter
LOA
35.83' · 10.92 m
Displ.
14,000 lbs · 6,350 kg
First year
1975

The Soverel 36 CB represents a pivotal era for Soverel Marine, bridging the gap between Bill Soverel’s early dedicated racers and the more refined performance cruisers of the late 1970s. Launched in the mid1970s, this model was specifically engineered to capitalize on the shallow waters of the Florida coast and the Bahamas, a design requirement that necessitated the centerboard (CB) configuration. Unlike the pure racing machines that followed, such as the Mark Sovereldesigned 33, the 36 CB was conceived as a versatile racercruiser. It offered the hightension rig and slippery hull form expected of a Soverel, but with the added utility of a 3’ 11” draft with the board up. Because Soverel Marine operated as a semicustom builder during this period, individual 36s often vary significantly in their layup—ranging from solid fiberglass to exotic coring materials—making each hull a unique study in mid70s performance engineering.

Measurements

Dimensions 01

LOA
35.83 ft
LWL
30.83 ft
Beam
10.67 ft
Draft
8.25 ft
Max headroom
-
Air draft
-

Construction & hull 02

Construction
Fiberglass
Hull type
Monohull
Keel type
Centerboard
Rudder
1× Spade
Ballast
7500 lbs (Lead)
Displacement
14000 lbs
Water
45 gal
Fuel
45 gal

Rig & sails 03

Rig type
Cutter
P · main luff
42.5 ft
E · main foot
11 ft
I · fore ht.
47 ft
J · fore base
15.2 ft
Forestay (est)
49.4 ft
Sail area
591 sqft

Calculations 04

SA/D ratio
16.28
Ballast/Disp.
53.57
D/L ratio
213.28
Comfort ratio
28.59
Capsize screening
1.77
Hull speed
7.44 kn

Sailing Performance & Handling

The Soverel 36 CB is defined by its versatile underwater profile. With the centerboard fully extended, the boat draws approximately 7’ 0”, providing the lateral resistance necessary for competitive upwind work. In light air, the boat’s relatively low displacement allows it to accelerate quickly, a trait inherited from Bill Soverel’s background in offshore racing. Owners often report that the boat feels "active" at the helm, requiring attentive trimming but rewarding the sailor with impressive pointing angles.

Handling characteristics change noticeably with the board retracted. Off the wind, the reduction in wetted surface allows the 36 CB to remain competitive with larger, fixed-keel yachts. However, the centerboard configuration does introduce a level of mechanical complexity; sailors must be mindful of "board clank" in certain sea states, which can occur if the pennant is not properly tensioned. While the boat is stiff enough for coastal hops, its light-to-moderate displacement means it can be lively in a chop. The ballast-to-displacement ratio is typically centered around providing a stable platform for the IOR (International Offshore Rule) era, though it lacks the extreme "bustle" seen in more radical designs of that decade, resulting in more predictable tracking.

Interior Comfort & Variations

True to Soverel Marine's semi-custom roots, the interior of the 36 CB was often tailored to the original buyer's specifications. The standard layout typically features a traditional V-berth forward, followed by a head and hanging locker. The main salon usually utilizes a settee-and-pilot-berth arrangement, a common feature in 1970s performance boats intended to provide secure sleeping quarters while underway.

A critical distinction for the 36 CB is the presence of the centerboard trunk. Bill Soverel’s design team integrated the trunk into the main cabin cabinetry, often using it as a base for the dining table to minimize its footprint on the living space. Woodwork varies from simple teak veneers to more elaborate solid teak trim, depending on whether the boat was finished for club racing or private cruising. The "Sibling" variants include the Soverel 36 Fixed Keel, which offers a simplified interior due to the absence of the centerboard trunk, and the later Soverel 37, which refined the hull lines for better performance under evolving handicap rules.

Known Issues & Buyer’s Checklist

Prospective buyers of a Soverel 36 CB must prioritize the structural integrity of the centerboard system. The most common "gotcha" for this model involves the centerboard pivot pin and the pennant assembly. Over decades, the pivot hole in the fiberglass board can become elongated, leading to vibration or "slop" while sailing. Additionally, the stainless steel pennant (the cable used to raise the board) is a wear item that requires regular inspection to prevent the board from dropping unexpectedly.

Another area of concern is the deck core. According to historical technical discussions among Soverel owners, the builder utilized both balsa and Klegecell coring. If deck hardware—such as the chainplates or stanchion bases—was not properly re-bedded, moisture ingress can lead to significant delamination. Finally, given the age of the 1975-era hulls, the original aluminum fuel tanks and copper plumbing should be inspected for galvanic corrosion, particularly in boats that have spent their lives in the high-salinity environments of Florida or the Caribbean.

Community & Resources

The Soverel 36 CB benefits from a niche but dedicated community of owners who value the brand’s racing heritage. While there is no longer a factory-backed organization, the Soverel 33 Class Association remains the primary repository for technical knowledge regarding the builder’s construction methods and history. Many 36 owners utilize these forums to cross-reference rigging specifications and coring repairs, as the build techniques used in the 36 were precursors to the methods perfected in the 33.

The Verdict

The Soverel 36 CB is an evocative example of 1970s American yacht design, offering a rare combination of "big boat" feel and "small boat" accessibility. It is an ideal choice for the performance-oriented sailor who operates in shallow-water regions but refuses to sacrifice windward capability.

Pros:

  • Exceptional Draft Versatility: The 3' 11" board-up draft opens up cruising grounds like the Florida Keys and the Bahamas that are inaccessible to most 36-footers.
  • Performance Heritage: Inherits the "Soverel Speed" that dominated IOR and MORC racing in the late 20th century.
  • Semi-Custom Build: High probability of better-than-production finishes or unique interior layouts.

Cons:

  • Mechanical Maintenance: The centerboard trunk and pennant system require more maintenance than a standard fixed keel.
  • Age-Related Wear: Most hulls will require significant updates to electrical and plumbing systems to meet modern cruising standards.
  • Varying Build Standards: Due to the semi-custom nature, buyers must perform a rigorous survey to determine the specific materials used in their hull's layup.

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