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2007 Alerion Yachts Alerion Express 20


Seller's Description

Alerion 20 - Anara - Asking $48,000

Year built 2007 - Hull #60 Designed by Carl Schumacher and built in the USA the beautiful Alerion 20 is still in production - latest hull # is 117. Price new is $80,000 without trailer.

“The A20s classic topside, modern underbody, gratifying speed, and single-handed ease make her a treat for seasoned sailors as well as those just getting started. Her ‘sit in cockpit provides a comfortable, dry sail. And she is a keelboat which means she can be left on a mooring without fear of blow-over, yet, she still is trailerable.”

“The Alerion 20 is regarded by many as the perfect little daysailer with quality construction and finish. Simply beautiful.

Equipment: New Alexseal paint professionally applied - July 2022 - flag blue hull with gold cove stripe and red boot stripe New SeaHawk bottom paint - July 2022

Sails and rigging North Main - single reef - Simple 2-line system North Jib on Harken fuller Hoyt jib boom Boom vang Boom kicker Lazy jacks - New dyneema with low friction rings - new 2022 New standing rigging 2022 Furler overhauled 2022 Adjustable Dyneema backstay with low friction ring - new 2022 Windex - new 2022

Engine 2017 Honda 4 HP outboard on adjustable bracket. Starts and runs perfect. 3 gallon external fuel tank added in 2022. This is in addition to the internal fuel tank. Recent 2023 tune-up including: oil change, iridium spark plug, fuel filter, engine flush, new water pump impeller, propeller clean and lube. Oil changed spring 2024. Engine stored indoors during the winter.

Covers & bags Mainsail cover Cockpit cover Sunbrella Winter Sunbrella cover Sailbags

Misc. Toe rails refinished 2022 Bilge pump - rebuilt 2022, new hoses 2022 Tiller tender - shock cord Paddle Fenders and dock lines Anchor and rode US Flag on pole mount Ritchie Tactician Compass - new 2022 USB drive with manuals Current PHRF Certificate - Rating is 249 Misc. spares, lines, fenders etc.

Specifications Length Overall - 20 0 Length Water Line - 17 1 Beam - 6 10 Draft - 3 6 Air Draft - 30 8 Displacement - 1,900 lbs (including ballast) Ballast



Carl Schumacher
TPI Composites
Alerion Yachts
# Built
Fin + Bulb


Length Overall
20 0 / 6.1 m
Waterline Length
17 1 / 5.2 m
6 0 / 1.8 m
2 11 / 0.9 m
1,900 lb / 862 kg
780 lb / 354 kg

Rig and Sails

Reported Sail Area
220′² / 20.4 m²
Total Sail Area
Sail Area
Air Draft
Sail Area
Forestay Length

Auxilary Power

Fuel Type
Fuel Capacity
Engine Hours


Water Capacity
Holding Tank Capacity


Hull Speed
6.9 kn
Classic: 5.54 kn

Hull Speed

The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.


Classic hull speed formula:

Hull Speed = 1.34 x √LWL

A more accurate formula devised by Dave Gerr in The Propeller Handbook replaces the Speed/Length ratio constant of 1.34 with a calculation based on the Displacement/Length ratio.

Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio.311
Hull Speed = Max Speed/Length ratio x √LWL

6.92 knots
Classic formula: 5.54 knots
Sail Area/Displacement
>20: high performance

Sail Area / Displacement Ratio

A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.


SA/D = SA ÷ (D ÷ 64)2/3

  • SA: Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay).
  • D: Displacement in pounds.
<16: under powered
16-20: good performance
>20: high performance
>40: stiffer, more powerful

Ballast / Displacement Ratio

A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.


Ballast / Displacement * 100

<40: less stiff, less powerful
>40: stiffer, more powerful
100-200: light

Displacement / Length Ratio

A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.


D/L = (D ÷ 2240) ÷ (0.01 x LWL)³

  • D: Displacement of the boat in pounds.
  • LWL: Waterline length in feet
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
<20: lightweight racing boat

Comfort Ratio

This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.


Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam1.33)

  • D: Displacement of the boat in pounds
  • LWL: Waterline length in feet
  • LOA: Length overall in feet
  • Beam: Width of boat at the widest point in feet
<20: lightweight racing boat
20-30: coastal cruiser
30-40: moderate bluewater cruising boat
40-50: heavy bluewater boat
>50: extremely heavy bluewater boat
Capsize Screening
>2.0: better suited for coastal cruising

Capsize Screening Formula

This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.


CSV = Beam ÷ ³√(D / 64)

  • Beam: Width of boat at the widest point in feet
  • D: Displacement of the boat in pounds
<2: better suited for ocean passages
>2: better suited for coastal cruising

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