MARINER 20 (SPISAK)

About the MARINER 20 (SPISAK)

Sail area: -Main: 11.5 m² / 123.5 ft² -Jib: 8 m² / 86.1 ft² -Spinnaker (optional): 28 m² / 301.4 ft² Available in a Sport version with daggerboard: Max Draft: 1.38 m / 4.5 ft Displacement: 750 kg Ballast: 280 kg Sail area: 22 m² -Main: 13.8 m² / 148.5 ft² -Jib: 8.2 m² / 88.3 ft² -Spinnaker (optional): 33 m² / 355.2 ft² EC Certificate: C

The Mariner 20 is a compact trailerable cruiser designed by Wojciech Spisak and built by Mariner Yachts (PL) starting in 2010. While the exact total hull count is unverified, the design emphasizes a lightweight, performance-oriented package with a displacement of 2799.87 lb and a beam of 8.04 ft.

Best for:

This boat suits coastal cruisers and trailerable enthusiasts who prioritize ease of transport and storage over heavy offshore endurance. Its light displacement and manageable LOA of 19.62 ft make it ideal for single-handers or couples seeking a low-maintenance day sailor with overnight capability.

Bluewater capability:

With a capsize ratio of 2.28 and a relatively light displacement of 2799.87 lb, the Mariner 20 is best suited for protected coastal waters rather than extended bluewater passages. Its shallow max draft of 4.0 ft aids in accessing shallow bays but does not compensate for the lack of heavy ballast needed for serious offshore stability.

Comparables:

Comparable boats include other lightweight trailerable designs from the same era, such as the O'Day 23 or small Hunter models, which share similar LOA and trailer-friendly dimensions. The Mariner 20 distinguishes itself with a higher SA/D ratio of 16.95, suggesting better upwind performance than heavier, more traditional cruisers of similar length.