Compromis 620 Information, Review, Specs

Sailing Performance & Handling

Under sail, the Compromis 620 is characterized by its remarkable stiffness, a trait derived from a ballast-to-displacement ratio that reaches nearly 50% on some hulls. This high ratio makes the boat exceptionally "sea-kindly" for its size, allowing it to remain relatively upright and composed in a stiff breeze where lighter daysailers might struggle. With a modest masthead sloop rig, it is not a "light-air flyer" but excels in the 3 to 5 Beaufort range, where its weight and fin keel provide predictable tracking and a secure feel on the helm.

The steering is typically via a transom-hung rudder, which offers direct feedback. Because the boat was designed for the choppy waters of Northern Europe, it tends to punch through wave sets rather than skip over them, providing a dry ride for a 20-foot boat. Its shallow draft of approximately 0.85 to 0.95 meters (roughly 3 feet) is a significant advantage for coastal explorers, allowing access to tidal creeks and shallow harbors that are inaccessible to deeper-keeled competitors.

Interior Comfort & Variations

Despite its compact 6.2-meter length, the Compromis 620 features a fully enclosed cabin that maximizes every inch of available space. The interior is generally configured with four berths: a V-berth in the bow and two settee berths that extend under the cockpit seats. While there is no standing headroom—a common trade-off in this size class—the designer included a large sliding companionway hatch that allows an adult to stand comfortably while working at the small galley.

The galley area is traditionally simple, often featuring a pull-out stove and a small sink connected to a modest freshwater bladder. Storage is abundant for a vessel of this era, with lockers tucked beneath the berths and shelves lining the cabin sides. The 620 was primarily built as a single-configuration hull, though earlier versions lacked the forward escape hatch that became standard in later production years to improve ventilation. Its larger sibling, the Compromis 720, was built on a similar philosophy but offered significantly more volume, whereas the smaller 520 served as a more basic "weekend" alternative.

Known Issues & Buyer’s Checklist

Prospective buyers should approach the Compromis 620 as a classic GRP (Glass Reinforced Plastic) vessel, keeping the following technical areas in mind during inspection:

• Rudder Bearings and Fittings: The transom-hung rudder is a high-stress point. Check for excessive "play" or wobbling in the pintles and gudgeons, which can lead to vibration under sail or eventual failure of the mounting hardware.
• Window and Hatch Seals: Like many boats from the 1970s, the original acrylic windows and the main companionway hatch are prone to leaking. Look for water staining on the interior teak or delamination of the interior liners near the cabin sides.
• Keel-to-Hull Joint: While the 620 is known for a sturdy build, any vessel of this age should be inspected for "smile" cracks at the forward or aft end of the keel-to-hull joint, which may indicate past groundings or the need for re-bedding the keel bolts.
• Deck Softness: Owners have occasionally reported soft spots in the sandwich construction of the deck, particularly around the mast step or chainplates. High-load areas should be tested with a phenolic hammer for a dull "thud" that indicates core rot or delamination.

Community & Resources

The primary hub for technical support and historical documentation is the Compromisclub, an active Dutch-based organization that maintains extensive archives on the 620, including original brochures and technical manuals. The club remains a vital resource for sourcing replacement parts or advice on structural restorations.

The Verdict

Pros:

• Exceptional Stability: A 50% ballast ratio makes it one of the safest-feeling 20-footers in heavy air.
• Shallow Draft: Ideal for exploring inland lakes and shallow coastal waters.
• Reliable Build Quality: Thick laminate construction from a yard known for durability.
• Active Community: Strong owner support through the Compromisclub.

Cons:

• No Standing Headroom: Tall sailors will find the cabin cramped for extended stays.
• Weight: Heavier than many modern trailersailers, making it more difficult to launch and recover frequently.
• Light Air Performance: The heavy displacement and conservative sail plan can make it sluggish in very light winds.