Gunboat 66

BoatsGunboat 66

See her sail

The Gunboat 66, on the water

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

Is it for you?

Character

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

Shoal draftDraws 0.67 m, board up where she has one — creeks, sandbars and thin anchorages most keels have to stay out of.

LightHeavy

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

Displacement / length 64

EasygoingPowered-up

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

Sail area / displacement 34.2

What the fleet has seen

The Gunboat 66, as the fleet has seen it

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

The Gunboat 66 is a 20.1-meter fractional sloop catamaran with twin daggerboards, designed by Morelli, Melvin, and Morrelli and built by Gunboat since 2007. It has a beam of 8.6 meters, a draft of 2.6 meters, and displaces 15,422 kg. The Gunboat brand operates within a competitive performance catamaran market, with its corporate history intertwined with other builders like HH Catamarans, which emerged from legal disputes involving Gunboat founder Peter Johnstone. Grand Large Yachting owns Gunboat, consolidating it with the Outremer brand.1:46

The living fleet

Sailed by the fleet

Where the fleet has filmed this boat.

Seen 2 times across 2 channels of the fleet.

Basemap © Wikimedia Commons · CC BY-SA 4.0

The record

Full specifications

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

Dimensions

Weights

Rig & sail area

Rig

Fractional Sloop

Ratios

SA / displacement

34.2

Displacement / length

63.7

Hull

Hull type

Catamaran Twin Dbrd.

Construction

FG/epoxy/nomex

Production

Years built

First built 2007

Designer

Morelli, Melvin, Morrelli

Builder

Gunboat

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.

Hh 6620.10 mSame hull familyNear-identical lengthA 20-metre carbon catamaran with an aggressive 34.64 sail area-to-displacement ratio for elite-level speed

19. Palma International Boat Show 2026 | Yacht Market Trends, Brokerage & Solaris Yachts4:54 from Berthon International

Gunboat 5517.35 mSame hull family2.8 m shorterA Nigel Irens-designed performance catamaran with a high sail-area-to-displacement ratio for rapid offshore cruising

What Happened to Gunboat? Why It Left America.3:57 from All About Sailing

Voyage Yachts 59017.72 mSame hull family2.4 m shorter

Finally Sailing Again (but not the way we planned) | Step 4343:10 from Sailing Uma

Bali 5.817.65 mSame hull family2.5 m shorterA 2024 Xavier Fay-designed catamaran featuring a high sail-area-to-displacement ratio for spirited performance

The ULTIMATE Family Charter Catamaran - Bali 5.8 Full Tour from Practical Sailor

Hh 5516.74 mSame hull family3.4 m shorterA 16.74-metre carbon catamaran with a high 33.37 SA/displacement ratio, built for rapid passage making since 2018

FILTERING THE LITERAL CRAP 💩 OUT OF THE OCEAN16:06 from Gone with the Wynns

Outremer 5516.30 mSame hull family3.8 m shorterA lightweight 16.3-metre performance catamaran with an aggressive 34.55 sail-area-to-displacement ratio

#189 It's our 2-year anniversary!! No DIY17:37 from Catamaran Mistertong

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.

Gunboat 48Fractional Sloop · 14.74 m Gunboat 55A Nigel Irens-designed performance catamaran with a high sail-area-to-displacement ratio for rapid offshore cruising Hh 66A 20-metre carbon catamaran with an aggressive 34.64 sail area-to-displacement ratio for elite-level speed Gunfleet Marine 58A masthead sloop featuring a keel-centerboard configuration and dual rudders for deep-water stability and control Lagoon Sixty 5A 20-meter catamaran with a shallow 1.55-meter draft and a high sail area-to-displacement ratio for agile cruising Hh 55A 16.74-metre carbon catamaran with a high 33.37 SA/displacement ratio, built for rapid passage making since 2018

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