BoatsComet 770

Comet 770

Masthead Sloop · Fin With Rudder On Skeg · 1973–1978

A Jean-Marie Finot-designed IOR quarter-tonner with a high sail-area-to-displacement ratio for spirited club racing

Designed by Groupe Finot & Jean Marie Finot (Groupe Finot), built by Comar.

LOA
Beam
Draft (max)
Displacement
Ballast
Hull type
Fin With Rudder On Skeg

See her sail

The Comet 770, on the water

The fleet's own footage — the truest look at how she really moves.

Footage from Maurizio and the sail

Is it for you?

Character

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

LivelySea-kindly

Her moderate displacement on a moderate beam gives 15 — a quick, lively motion that feels every wave.

Comfort ratio 15
CoastalBluewater

2.28 — right around the 2.0 line, the edge between coastal and offshore.

Capsize screening 2.28
LightHeavy

250 — moderately heavy for her waterline, a balanced cruising weight.

Displacement / length 250
EasygoingPowered-up

23.1 — a lot of sail for her weight; powered-up and eager, a real performer.

Sail area / displacement 23.1
TenderStiff

44% of her weight is ballast — stiff, standing up well to her sails.

Ballast 44%

Powered-up and quick to accelerate — this one likes to sail.

What the fleet has seen

The Comet 770, as the fleet has seen it

Derived from the videos the fleet has analysed of this model. ▶ marks open the moment aboard.

The Comet 770 is a 7.7-meter masthead sloop designed by Groupe Finot and built by Comar Yachts between 1973 and 1978, originally as an IOR 1/4 ton racer. With a fin keel and rudder on skeg, it displaces 1610 kg. Aboard "Maurizio and the sail," the Comet 770 is sailed on Lake Garda, where its crew demonstrates single-handed maneuvers. The crew uses a specific solo mooring technique, retrieving the buoy from the stern to maintain helm control, and emphasizes keeping the engine running until secured.3:30 Single-handed reefing in 15–17 knots of wind involves ten steps, including bearing away, easing sheets, and adjusting halyards and reefing lines, with the crew noting an autopilot or second person is essential to prevent uncontrolled bearing away.1:40 Departure from a dock single-handed includes disconnecting shore power, warming the engine, and assessing wind direction before releasing lines and backing out.0:45 The boat's Marconi rig features an aluminum mast, boom, and standing rigging with forestays, backstays, and shrouds.0:50 The crew explains points of sail relative to wind direction, defining the no-go zone and distinguishing between tacking and jibing.1:35 The boat's handling characteristics are influenced by the relationship between the center of lateral resistance and the center of effort, which determine weather or lee helm.2:18

The living fleet

Sailed by the fleet

The channels sailing this model, and where they were last seen.

Seen 19 times across one channel of the fleet.

Basemap © Wikimedia Commons · CC BY-SA 4.0

On the water

The Comet 770 on video

IN SOLITARIA: ridurre le vele ⚓🚢 #barcaavela #velaThe video contains no actionable sailing information or technical content.Maurizio and the sailESSENTIAL SAILING KNOTS⚓🚢 #sailing #sailinglifeMaurizio demonstrates seven essential sailing knots, including the bowline, clove hitch, and proper cleat hitch technique.Maurizio and the sailHow to avoid dismasting your sailboat⚓🚢 #sailboat #sailingComet 770 chainplate covers prevent jib sheets from pulling cotter pins and risking dismasting on Lake Garda.Maurizio and the sailHOW TO SINGLE-HANDEDLY UNMOOR A SAILBOAT ⚓🚢 #sailboat #sailingMaurizio demonstrates a single-handed departure from a dock using a Comet 770 sailboat.Maurizio and the sailSOLO SAILING - STERN-TO MOORING WITH BOW MOORING BUOY⚓🚢 #sailboat #sailingMaurizio demonstrates a solo stern-to mooring technique using a bow buoy at a quay in Gargnano.Maurizio and the sailCrociere scuola nel MediterraneoThe video provides no actionable information regarding Mediterranean sailing cruises or instructional content.Maurizio and the sailTHE MOST FAVORABLE POINT OF SAIL FOR THE SAILOR ⚓🚢 #sailingboat #sailingClose-hauled sailing generates more apparent wind than downwind courses, increasing total power on the sails.Maurizio and the sailSINGLE-HANDED DOCKING WITHOUT STRESS!!!⚓🚢 #sailing #sailinglifeMaurizio demonstrates solo docking techniques at Porto san nicolò by securing the stern line under engine power.Maurizio and the sailSolo mooring buoy pickup ⚓🚢 #sailing #sailinglifeMaurizio secures a sailboat to a mooring buoy on Lake Garda by leading a line from the bow.Maurizio and the sailHOW TO STEER THE RIGHT COURSE? (Points of sail)⚓🚢 #sailing #sailingboatMaurizio explains the four primary points of sail while experiencing 30-knot winds in Riva del Garda.Maurizio and the sailCENTERS OF FORCE IN SAILING⚓🚢 #sailingboat #sailingAligning the center of effort and center of lateral resistance prevents excessive rudder drag and inefficient zigzagging.Maurizio and the sailHow scary is the bow mooring⚓🚢 #sailboat #sailingBow-in mooring at Porto San Nicolò, Riva del Garda, demands precise reverse-gear timing in 20-knot winds.Maurizio and the sail

The record

Full specifications

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

Dimensions
Weights
Ballast / displacement
43.7%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
23.1
Displacement / length
250.3
Comfort ratio
15.1
Capsize screening
2.28
Hull speed
5.8 kn
Pounds / inch immersion
573
Hull
Hull type
Fin with rudder on skeg
Construction
Fiberglass
Production
Years built
1973–1978
Designer
Groupe Finot, Jean Marie Finot (Groupe Finot)
Builder
Comar

Boats like this, on the water

More boats like her, on the water

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.

Avance Yachts 2457.48 mSame hull family0.2 m shorterA 1972 fin-keeled fractional sloop with a 48% ballast ratio, designed for stability in a compact 24-foot package
Cal 257.62 mSame hull familyNear-identical lengthA flush-deck masthead sloop featuring a pop-top companionway that became one of the most popular models in the fleet
Puma 277.95 mSame hull family0.3 m longerA Ron Holland-designed masthead sloop with a fin keel and spade rudder, built for performance-oriented coastal cruising
Dehler Yachts 25CR7.50 mSame hull family0.2 m shorterA Van de Stadt-designed fractional sloop with a high sail area-to-displacement ratio built for spirited performance
J Boats Tillotson Pearson J/247.32 mSame hull family0.4 m shorterThe world's most popular one-design keelboat, featuring a light 1406kg displacement for responsive, agile handling
Martinique 257.70 mSame hull familyNear-identical lengthA Brazilian-built masthead sloop with a 44% ballast ratio, offering a stiff and stable platform for coastal cruising

The family

Related models

The designs closest to hers — usually the rest of the builder's range, sometimes the same hull sold under another name.

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