Seezunge B — Information, Review, Specs

Gerhard Gilgenast·1969·Fricke & Dannhus GmbH & Co KG
Approximate drawing

Hover a measurement to read its value

Hull type
Monohull · centerboard
Rig
Cat Rig
LOA
21.33' · 6.5 m
Displ.
3,968 lbs · 1,800 kg
First year
1969

The Seezunge B is a quintessential German Jollenkreuzer (centerboard cruiser) designed by the prolific naval architect Reinhard Drewitz. Representing a midcentury approach to versatile, trailerable coastal cruising, the "B" variant sits within a lineage of "Sole" fishnamed designs (Seezunge A through D) that prioritized shallow draft and accessibility for inland waterways, the Baltic coast, and North Sea tidal flats. Often constructed in mahogany plywood or later in GRP (fiberglass), the Seezunge B was engineered to balance the spirited performance of a racing dinghy with the basic shelter required for overnighting. The design reflects the postwar European boom in amateurbuilt and smallyard wooden construction, where Reinhard Drewitz played a pivotal role in democratizing sailing.

Measurements

Dimensions 01

LOA
21.33 ft
LWL
-
Beam
10.33 ft
Draft
4.92 ft
Max headroom
4.1 ft
Air draft
-

Construction & hull 02

Construction
Wood
Hull type
Monohull
Keel type
Centerboard
Rudder
1× Outboard
Ballast
661 lbs
Displacement
3968 lbs
Water
-
Fuel
-

Rig & sails 03

Rig type
Cat Rig
P · main luff
-
E · main foot
-
I · fore ht.
-
J · fore base
-
Forestay (est)
-
Sail area
301.39 sqft

Calculations 04

SA/D ratio
19.24
Ballast/Disp.
16.66
D/L ratio
Comfort ratio
Capsize screening
2.61
Hull speed

Sailing Performance & Handling

As a centerboard-dependent vessel, the Seezunge B is optimized for shallow-water performance and tactical inland sailing. The boat typically carries a fractional sloop rig, though some older wooden iterations were seen with gaff setups. With a draft that can be reduced to nearly a foot (approximately 0.25m–0.30m) with the board up, the boat is exceptionally capable in estuarine environments and can be easily "beached" for maintenance or tidal exploration.

Handling is characterized by high sensitivity to crew weight and sail trim. Given the absence of a fixed heavy keel, the Seezunge B relies on its relatively generous beam and the ballast provided by its centerboard—and often internal lead or iron pigs—to provide righting moment. Historical documentation from the Freundeskreis Klassische Yachten indicates that Drewitz designs were prized for their balanced rudders and "lively" feel. While not a blue-water yacht, the Seezunge B is respected for its sea-kindliness in short-period chop, provided the sailor manages the sail area early as the wind rises. The hull is capable of planing in brisk conditions, a trait that distinguishes it from more ponderous pocket cruisers of the same era.

Interior Comfort & Variations

The "B" model occupies a middle ground in the Seezunge hierarchy, offering more habitable volume than the dinghy-like Seezunge A but remaining more compact than the Seezunge C and D. The interior is a classic "sitting headroom" cabin, designed primarily for two adults with the possibility of accommodating two children on narrow quarter berths.

Standard layouts typically feature a V-berth in the bow, with the centerboard trunk serving as a central divider in the main cabin. Because many of these boats were either amateur-built from Drewitz’s plans or custom-finished by small yards like Bootsbau Schwarz, interior joinery varies significantly from austere plywood to high-gloss mahogany. Storage is generally found beneath the settee berths and in small lockers aft. While the Seezunge B lacks a dedicated galley or head (toilet) compartment, most owners utilize a portable stove and a chemical toilet stowed under the companionway. The cabin's primary function is to provide a dry, secure refuge for weekend trips, a task it performs well thanks to the relatively wide coachroof that allows for more interior shoulder room than expected for its length.

Known Issues & Buyer’s Checklist

Prospective buyers of a Seezunge B must differentiate between early wooden builds and later GRP models, as the maintenance profiles differ drastically.

  • Centerboard Trunk Integrity: On wooden models, the joint between the centerboard trunk and the keel is a notorious site for freshwater rot and structural fatigue. In GRP models, inspect for "weeping" at the pivot bolt, which can indicate internal delamination of the trunk walls.
  • Plywood Delamination: For mahogany plywood hulls, specific attention should be paid to the chine areas and the transom. Any signs of "softness" or dark staining under the varnish/paint suggest that the veneers have separated, requiring a labor-intensive repair.
  • Rigging Points: Drewitz designs are light, and over-tensioning the forestay or shrouds can lead to "hooking" the hull or pulling on the chainplates. Look for stress cracks in the gelcoat (on GRP models) or movement in the bulkhead attachments (on wooden models).
  • Rudder Blade Wear: The kick-up rudder mechanism is prone to wear at the pivot point. Excess play here can lead to a "shudder" at high speeds, which reduces steering precision.

Community & Resources

The Seezunge B is a recognized "classic" within the European sailing community. The most authoritative resource for technical drawings, historical context, and restoration advice is the Freundeskreis Klassische Yachten (FKY), a German-based organization dedicated to the preservation of vintage yacht designs. This group maintains archives on Reinhard Drewitz and provides a forum for owners of his "Sole" series to share construction details and organize regattas for traditional centerboarders.

The Verdict

The Seezunge B is an elegant, historically significant centerboarder that offers a tactile and rewarding sailing experience for those who appreciate classic lines and shallow-water versatility.

Pros:

  • Extreme Versatility: Excellent for exploring shallow bays, estuaries, and inland lakes where larger yachts cannot venture.
  • Ease of Transport: Its light weight and retractable board make it one of the most capable trailer-sailers in the classic category.
  • Aesthetic Appeal: Drewitz’s lines are timeless, often drawing admiration in harbors dominated by modern plastic hulls.

Cons:

  • Maintenance Intensive: Especially in wooden versions, the Seezunge B requires a dedicated owner to maintain its structural and cosmetic integrity.
  • Minimalist Living: With only sitting headroom and no fixed amenities, it is strictly a weekend vessel, not a long-term cruiser.
  • Initial Stability: As a light centerboarder, it requires active sailing and is less forgiving of heavy-weather mistakes than a displacement keelboat.

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