The Oostzee Jol (Baltic Jolly) is a quintessential example of the "Small Ships" philosophy, a design lineage that prioritizes seaworthiness and traditional aesthetics over raw speed. Originally inspired by the Danish Lynaes dinghy—a robust, clinker-built fishing vessel dating back to the early 19th century—the modern Oostzee Jol was popularized in the Netherlands during the fiberglass revolution of the 1960s and 70s. Primarily associated with the builder Polymore and later Marfrig Yachting, the boat is frequently recognized by its sibling designation, the Midget 15. The model is a double-ender with a distinctive "fat" beam and a round stern, a configuration designed to provide significant buoyancy and "lift" in following seas. Whether found as an open "Visserman" daysailer or the more common "Kajuit" (cabin) pocket cruiser, the Oostzee Jol remains a staple of the Dutch inland and coastal sailing scenes.
Oostzee Jol Information, Review, Specs
- Make
- Oostzee
- Model
- Jol
- Builder
- Polymore
- Designer
- —
- Number Built
Sailing Performance & Handling
The sailing characteristics of the Oostzee Jol are defined by its heavy-displacement nature and a full-length keel. With a displacement of approximately 1,146 lbs (520 kg) and nearly 50% of that weight dedicated to ballast (485 lbs/220 kg), the boat possesses a high degree of static stability. Unlike modern performance dinghies of similar length, the Oostzee Jol does not plane; instead, it carves a steady path through the water, exhibiting a "big boat" feel that is rare in a 15-foot platform.
Technical data from Oostzeejol.de indicates that the boat is exceptionally "koersvast" (track-stable) due to its long keel, making it easy to sail single-handedly even in gusty conditions. Its fractional sloop rig, typically carrying around 129 square feet of sail, is manageable but requires a stiff breeze to overcome the hull's significant wetted surface area. While it may struggle in light air, the boat excels in "a blow," where its round bilges and double-ended hull allow it to handle the steep chops of the IJsselmeer or the Randmeren with a dry, sea-kindly motion.
Interior Comfort & Variations
Despite its diminutive 4.65-meter length, the cabin version of the Oostzee Jol (the Midget 15) offers a surprisingly functional interior. The standard layout features two full-length berths that extend under the cockpit seats, providing sleeping accommodations for two adults. The cabin provides sitting headroom for four people, and historical brochures from Midgetclub NL highlight the inclusion of storage lockers under the berths and a small galley area in some custom fit-outs.
There are three primary variations of the hull:
- The Visserman: An open version without a cabin, preferred by traditionalists and those sailing on sheltered inland waters.
- The Standard Kajuit: The most common version with a low-profile cabin trunk.
- The "Higher" Version: Introduced by Marfrig Yachting, this variant increased the hull height by 10 cm and the cabin roof by 12 cm, significantly improving internal volume and making it a more viable "weekender." This version often included an integrated outboard well in the lazarette.
Popular Mentions & Media
The Oostzee Jol occupies a unique niche in the "Small Ship" movement championed by Dutch nautical writers like Hein Vandersmissen. While it hasn't featured in blockbuster films, it is a frequent subject in European classic boat journals such as Spiegel der Zeilvaart and Waterkampioen. It is often cited as the entry-level vessel for sailors who admire the lines of the larger Scandinavian "Spidsgatter" or the Colin Archer designs but require a trailerable, manageable package.
Known Issues & Buyer’s Checklist
Prospective buyers should focus on the following technical areas, common to GRP boats of this era:
- Saturated Flotation Foam: Many older Polymore builds utilized buoyancy foam in the double bottom and side tanks. If the hull has suffered leaks or stood with rainwater for years, this foam can become waterlogged, significantly increasing the boat's weight and compromising its sailing performance.
- Outboard Well Drainage: In versions equipped with a motor bun/well, check the seals and drainage ports. Debris can clog these areas, leading to stagnant water and potential osmosis in the surrounding GRP.
- Woodwork Maintenance: The companionway doors and decorative cockpit trim are often mahogany or teak. Neglected varnish can lead to rot, particularly where the wood meets the fiberglass deck.
- Keel Attachment: While the long keel is usually integrated into the hull mold, ensure there is no "smile" or cracking at the leading edge, which could indicate a hard grounding or structural fatigue.
Community & Resources
The Oostzee Jol benefits from a dedicated and active community, primarily centered in the Netherlands and Germany.
- The Midgetclub: This association supports owners of the Midget 15, 20, 26, and 31, providing technical archives and organizing annual "wet" reunions.
- Oostzeejol.de: An exhaustive technical resource and registry for owners of the various "Jol" types, including the Lynaes 14, Danica 16, and Nordica 16.
The Verdict
The Oostzee Jol is a specialized vessel for the sailor who values tradition, safety, and aesthetic "saltiness" over modern speed and efficiency.
Pros:
- Extreme stability and seaworthiness for a 15-foot boat.
- Easily trailerable and manageable for solo sailors.
- High-quality GRP construction in most serial-production units.
- Classic "double-ender" aesthetics that draw attention in any marina.
Cons:
- Relatively slow in light wind due to high displacement and wetted surface.
- Interior space is cramped for anyone over six feet tall (unless in the "Higher" version).
- No self-draining cockpit in many older models, requiring careful monitoring when moored.
Measurements
Construction & Hull
- Construction Material
- Fiberglass
- Hull Type
- Monohull Sailboat
- Keel Type
- Full
- Rudder
- 1x Attached
- Ballast
- 485 lbs
- Displacement
- 1146 lbs
- Water Capacity
- -
- Fuel Capacity
- -
Dimensions
- Length Overall (LOA)
- 15.26 ft
- Waterline Length (LWL)
- -
- Beam
- 6.17 ft
- Draft
- 1.64 ft
- Max Headroom
- -
- Air Draft
- -
Rig & Sails
- Rig Type
- Fractional Sloop
- P (Main Luff)
- -
- E (Main Foot)
- -
- I (Foretriangle Height)
- -
- J (Foretriangle Base)
- -
- Forestay Length (est)
- -
- Sail Area
- 129.17 sqft
Calculations
- Sail Area / Displacement (SA/D) Ratio
- 18.87
- Ballast / Displacement Ratio
- 42.32
- Displacement / Length Ratio (D/L) Ratio
- —
- Comfort Ratio
- —
- Capsize Screening Formula
- 2.36
- Hull Speed
- — kn