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Sailboat Specifications

Amphibian 30

Masthead Sloop · Fin W/Spade Rudder

Designed by Nelson/Marek · First built 1981

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LOA 29.81 ft  ·  Beam 10.20 ft  ·  Displacement 6,500.00 lb  ·  Sail Area 450  ·  Masthead Sloop  ·  Fin W/Spade Rudder
About the Amphibian 30 Sailboat

With limited documentation available, the Amphibian 30 represents one of those intriguing sailboats that has left relatively few traces in mainstream sailing literature. Based on its name and size class, this 30-footer appears to have been designed with versatility in mind, suggesting capabilities suited for both coastal cruising and day sailing applications. The "Amphibian" moniker hints at a design philosophy emphasizing adaptability to various sailing conditions and environments. Boats bearing this name often feature practical layouts and robust construction intended to handle diverse sailing scenarios, from protected waters to more challenging coastal conditions. Without extensive specification data, potential buyers should focus their research on finding examples of the boat in person or connecting with existing owners who can provide firsthand insights into the vessel's sailing characteristics and build quality. The 30-foot length places it in a popular size range for couples or small families seeking a manageable yet capable sailboat. Given the limited available information, prospective owners would benefit from thorough surveys and sea trials to evaluate the boat's condition and performance characteristics before making purchasing decisions.

Dimensions & Specifications
LOA (Length Overall) 29.81 ft / 9.09 m
LWL (Waterline Length) 24.50 ft / 7.47 m
Beam 10.20 ft / 3.11 m
Max Draft 5.39 ft / 1.64 m
Displacement 6,500.00 lb / 2,948 kg
Ballast 2,500.00 lb / 1,134 kg
Sail Area (Reported) 450
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Masthead Sloop
Construction FG
Designer Nelson/Marek
First Built 1981
Number Built 2
Related Sailboats Catalina 30 · Hunter 30 · Pearson 30 · J30 · Ericson 30
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Frequently Asked Questions

What is the Amphibian 30's sail area to displacement ratio?

The Amphibian 30 has a Sail Area to Displacement ratio (SA/D) of 20.74. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the Amphibian 30's comfort ratio?

The Amphibian 30 has a Ted Brewer Comfort Ratio of 17.46. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Amphibian 30 safe for offshore sailing?

The Amphibian 30 has a Capsize Screening Formula value of 2.19. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the Amphibian 30?

The theoretical hull speed of the Amphibian 30 is 6.63 knots, calculated from its waterline length.

How much does a Amphibian 30 weigh?

The Amphibian 30 has a displacement of 6,500.00 lb and a length overall (LOA) of 29.81 ft.

Who designed the Amphibian 30?

The Amphibian 30 was designed by Nelson/Marek, first built in 1981.