BoatsAlacrity 670 (Alacrity 22)

Alacrity 670 (Alacrity 22)

Masthead Sloop · Swing Keel · First built 1975

A swing-keel masthead sloop born from a partnership with Catalina Yachts, offering a versatile 6.5-metre coastal cruiser

Designed by Frank V. Butler, built by Russell Marine.

LOA
Beam
Draft (max)
Displacement
Hull type
Swing Keel

Is it for you?

Character

Where this design lands on the numbers a shopper trusts — read straight from her own ratios.

TrailerableBeam 2.34 m — inside the 2.55 m no-permit tow width across most of Europe, and the 2.59 m US and Canadian limit. About 1,021 kg of hull, so roughly 1,600 kg on a trailer: check that against your own towing rating.Ramp-launchableAbout 1,021 kg of hull, with a keel that raises or a draught shallow enough to float off a trailer — she can go back on the trailer at the ramp, not only into the water.Shoal draughtDraws 1.16 m, board up where she has one — creeks, sandbars and thin anchorages most keels have to stay out of.
LivelySea-kindly

Her light displacement on a beamy beam gives 12 — a quick, lively motion that feels every wave.

Comfort ratio 12
CoastalBluewater

At 2.34 she sits above the 2.0 line — beamy for her weight, and happiest coastal.

Capsize screening 2.34
LightHeavy

139 — light for her waterline, so she is easily driven and quick to accelerate.

Displacement / length 139
EasygoingPowered-up

19.1 — plenty of sail for her weight; lively and quick to respond.

Sail area / displacement 19.1

Light and lively — happiest day-sailing and coastal-hopping in settled weather.

  • Draws less than ~82% of boats her size on file

Compared with 603 boats of the same type within a quarter of her length.

The record

Full specifications

The complete reference set — tap any figure to switch between metric and imperial.

Dimensions
Weights
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
19.1
Displacement / length
139.1
Comfort ratio
11.5
Capsize screening
2.34
Hull speed
5.9 kn
Pounds / inch immersion
530
Hull
Hull type
Swing Keel
Construction
Fiberglass
Production
Years built
First built 1975
Designer
Frank V. Butler
Builder
Russell Marine

Boats like this, on the water

Nobody has filmed this one — but these are close.

Comparable boats the fleet has on camera: same type, within a quarter of her length. Open the boat, or watch the video — a timestamp means she only appears in passing.

Catalina Yachts 227.26 mSame hull family0.7 m longerA prolific masthead sloop with 15,000 built, offering a versatile swing-keel design for trailerable coastal cruising
O'day 226.61 mSame hull familyNear-identical lengthA prolific production success with over 3,000 hulls built, offering a nimble fractional rig for coastal daysailing
Marshall Marine Corporation Sanderling5.54 mSame hull family1.0 m shorterA gaff-rigged catboat based on a 1941 design, featuring a shallow-draft keel-centerboard hull for versatile day sailing
Dufour Yachts T66.15 mSame hull family0.4 m shorterA lightweight 800kg fractional sloop with a high sail-area-to-displacement ratio for spirited performance in light air
Macgregor 26X7.87 mSame hull family1.3 m longerA water-ballasted sail-power hybrid designed for versatile coastal cruising and easy trailering

The family

Boats like this

Nearby designs by size, type, and era — worth a look alongside her.

Keep looking

Nothing filmed of this one yet

Two ways to keep looking — both search what the fleet has actually recorded.

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