Cornish Shrimper 21 Information, Review, Specs

Sailing Performance & Handling

On the water, the Shrimper 21 is defined by its stability and surprisingly nimble handling for a heavy-displacement traditionalist. With a displacement of approximately 1,400kg and a ballast ratio nearing 40%, the boat feels planted in a breeze. The gaff rig, often intimidating to those raised on Bermudan sloops, is remarkably manageable on the 21 due to its well-balanced proportions. In a sea trial by Yachting Monthly, the vessel was noted for its ability to carry its sail well into a Force 4 without needing an immediate reef, thanks in part to the additional beam over the Shrimper 19.

The lifting keel (centerboard) is a defining performance feature. When fully lowered, it provides a draft of 1.35m (approx. 4'5"), allowing the boat to point reasonably well for a gaffer, though it will never match the upwind angles of a modern fin-keel yacht. With the board raised, the draft reduces to a mere 0.6m (approx. 2'0"), permitting the Shrimper 21 to explore shallow estuaries or dry out upright on its bilge runners. This versatility is bolstered by the optional inboard Yanmar 1GM10 diesel engine, which provides reliable steerage in tight marinas where the long-keel-and-transom-rudder configuration might otherwise make reversing a challenge.

Interior Comfort & Variations

The primary driver for the Shrimper 21’s development was interior volume. While the Shrimper 19 is often described as a "weekender," the 21 is a legitimate coastal cruiser. The cabin utilizes the extra two feet of length and increased beam to provide four full-sized berths: a traditional V-berth forward and two settee berths in the main saloon. The most notable upgrade over smaller models is the dedicated space for a marine sea toilet, located under the forward V-berth, which offers a level of privacy rarely found in boats of this size class.

Materials below deck favor a blend of "shippy" aesthetics and low-maintenance practicality. Extensive use of teak trim against white GRP mouldings keeps the cabin bright, avoiding the claustrophobia common in traditional small boats. The galley area is functional, typically featuring a two-burner stove and a small sink with manually pumped water. In terms of variations, while the hull remains consistent, owners could specify different engine configurations, including the popular Torqueedo electric drive for those sailing in environmentally sensitive inland waters. The Shrimper 21 also exists alongside its "siblings" in the range, such as the Shrimper 17 (a dayboat variant) and the more offshore-oriented Cornish Crabber 24 and 26, which utilize similar gaff-rigged philosophies on larger scales.

Popular Mentions & Media

The Cornish Shrimper 21 occupies a prestigious place in the British maritime press, often cited as the pinnacle of the "modern classic" movement. It has been a staple of the Southampton and Annapolis Boat Shows, representing the transition of the brand from a local Cornish builder to an international name. Editorial coverage in Practical Boat Owner has frequently highlighted the 21 as the ideal "downsizing" yacht for experienced sailors who wish to maintain the beauty of a traditional wooden boat without the exhaustive maintenance schedule of timber.

Known Issues & Buyer’s Checklist

Prospective buyers of a used Shrimper 21 should focus their inspection on the mechanical and structural integration of the lifting keel and the inboard engine.

• Centerboard Pivot & Pin: The stainless steel pin and the casing for the lifting keel are subject to wear. If the board "clanks" excessively while at anchor or under sail, the bushings or the pin itself may need replacement.
• Engine Alignment: Because the Yanmar 1GM10 is a single-cylinder engine, it produces significant vibration. Owners on technical forums often note that engine mounts should be checked every 500 hours to ensure they haven't settled, which can lead to shaft misalignment.
• Bowsprit Integrity: The wooden (often Sitka Spruce) bowsprit requires regular varnishing. If left neglected, fresh water can penetrate the end grain, leading to rot at the forestay attachment point.
• Chainplates and Rigging: Ensure the shroud attachments to the hull are watertight; early signs of "crazing" in the gelcoat around the chainplates may indicate the boat has been over-tensioned or sailed hard in heavy weather.

Community & Resources

The Shrimper 21 benefits from one of the most organized owner networks in the sailing world. The Shrimper Owners Association (SOA) provides an exhaustive technical library and organizes "raids" and rallies across the UK and Europe. Additionally, the Cornish Crabbers Club offers a broader community for owners of the entire range, providing a direct line to the new builders at Blue Lagoon Marine for parts and historical documentation.

The Verdict

The Cornish Shrimper 21 is the definitive choice for the sailor who refuses to compromise between traditional beauty and modern convenience. It is a robust, forgiving vessel that excels in coastal hopping and "creek crawling."

Pros:

• Exceptional Resale Value: Demand for the 21 remains high on the secondary market due to limited production runs.
• Shallow Draft: The lifting keel allows access to moorings and harbors inaccessible to most 20-footers.
• Classic Aesthetics: One of the few modern GRP boats that receives "the look" in every harbor it enters.

Cons:

• Gaff Rig Complexity: The extra lines (peak and throat halyards) create a steeper learning curve for sailors used to Bermudan rigs.
• Weight: At 1,400kg plus a trailer, it requires a substantial towing vehicle (SUV or 4x4) compared to the Shrimper 19.
• Single-Cylinder Vibration: The standard diesel engine is noisy and vibrates significantly at lower RPMs.