Piewiet 820 Flush Deck Information, Review, Specs

Sailing Performance & Handling

Under sail, the Piewiet 820 Flush Deck reflects the conservative yet efficient philosophy of its designers. With a relatively high ballast ratio—often exceeding 40% depending on the specific keel configuration—the boat is notably stiff, carrying its canvas well into freshening breezes before needing a reef. Owners typically report that the hull tracks exceptionally well thanks to its deep fin keel and a skeg-hung rudder, a combination that offers a balanced helm and significant protection for the steering gear in offshore conditions.

While it is not a light-air racer, the 820 is surprisingly nimble in a blow. The boat’s motion is described as "kind," with a displacement-to-length ratio that allows it to punch through chop rather than bouncing over it. The flush deck layout provides an excellent working platform for the crew, offering wide side decks and a clear foredeck for sail changes or anchoring maneuvers. Technical data from historical Van de Stadt archives suggests the boat was optimized for stability and ease of handling, making it a frequent choice for single-handed sailors or small families transitioning from dayboats to coastal cruisers.

Interior Comfort & Variations

The Flush Deck configuration is the Piewiet 820's primary selling point regarding onboard living. By raising the deck level, the interior gains significant headroom—a rarity in an 8.2-meter vessel of this vintage—and an expansive feeling of beam-to-beam volume. The layout typically features a classic V-berth forward, a central saloon with opposing settees that double as sea berths, and a compact galley and navigation station flanking the companionway.

Materials are characteristically Dutch: heavy use of teak joinery and high-pressure laminates that have proven remarkably durable over decades of use. The Piewiet 820 was also produced in a "Standard" version with a traditional coachroof, which offers a different aesthetic but slightly less interior "airiness" compared to the Flush Deck. Furthermore, the hull served as the foundation for the Piewiet 850 in later years, which shared many of the 820's DNA but featured updated deck moldings and interior finishes.

Known Issues & Buyer’s Checklist

Prospective buyers of a Piewiet 820 Flush Deck should approach the vessel with an awareness of its age, focusing on the specific maintenance requirements of 1970s/80s fiberglass construction.

1. Deck Delamination: Because the flush deck provides a large, flat surface area, any moisture ingress around stanchion bases or the mast step can lead to core saturation. A thorough percussion test (tapping) of the deck is essential to check for soft spots or delamination.
2. Rudder Bearing Play: The skeg-hung rudder is a robust design, but the bushings and bearings can wear over time, leading to vibration or "clunking" at the helm. Inspecting the rudder stock for play while the boat is hauled out is a priority.
3. Osmotic Blistering: Early Piewiet hulls were built using orthophthalic resins. While generally thick and strong, many 820s have required epoxy treatments over the years to manage osmosis. A moisture meter reading of the hull is highly recommended.
4. Chainplate Reinforcement: The shroud attachments (chainplates) are bolted to internal bulkheads. Buyers should inspect these areas for signs of water staining or movement, which may indicate that the bulkhead-to-hull bond has been compromised.
5. Engine Longevity: Many original 820s were fitted with Farymann or early Volvo Penta diesel engines. While these are reliable units, parts availability can be a challenge. Checking the service history of the raw water cooling system is vital to ensure the block hasn't suffered from internal corrosion.

Community & Resources

The Piewiet community is primarily centered in the Netherlands and Germany, where these boats have a loyal following. The most prominent technical resource for owners is the Van de Stadt Design archive, which still maintains many of the original drawings and technical specifications for their legacy designs. While no singular international "Piewiet Association" currently operates at a high level, owners frequently share technical data and modification tips through regional Dutch sailing forums and "Oldtimer" regatta circles.

The Verdict

Pros:

• Seaworthy Design: Exceptional stability and tracking for a boat of its size, courtesy of Van de Stadt.
• Interior Volume: The flush deck design provides impressive headroom and a spacious feel.
• Build Quality: Solid fiberglass layup that avoids many of the structural flex issues found in lighter modern production boats.

Cons:

• Aesthetic Polarity: The flush deck look is functional but may not appeal to those preferring a traditional silhouette.
• Age-Related Maintenance: Buyers must be prepared to address typical "classic plastic" issues like osmosis and aging deck hardware.
• Light Air Performance: The heavy displacement and conservative sail plan mean the boat requires a decent breeze to truly come alive.