BoatsSnapdragon 747

Snapdragon 747

Masthead Sloop · Twin keels · First built 1964

A twin-keeled masthead sloop designed for shoal water, featuring an upgraded rig and rudder from the Snapdragon 24

LOA
Beam
Draft (max)
Displacement
Ballast
Hull type
Twin Keel

Is it for you?

Character

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

TrailerableBeam 2.44 m — inside the 2.55 m no-permit tow width across most of Europe, and the 2.59 m US and Canadian limit. About 1,678 kg of hull, so roughly 2,300 kg on a trailer: check that against your own towing rating.Shoal draughtDraws 0.76 m, board up where she has one — creeks, sandbars and thin anchorages most keels have to stay out of.
LivelySea-kindly

Her moderate displacement on a moderate beam gives 17 — a quick, lively motion that feels every wave.

Comfort ratio 17
CoastalBluewater

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

Capsize screening 2.07
LightHeavy

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

Displacement / length 192
TenderStiff

42% of her weight is ballast — moderately stiff, a middle-of-the-road stability.

Ballast 42%

A balanced, easily-driven cruiser — comfortable and forgiving for coastal work.

  • Draws less than ~96% of boats her size on file
  • Narrower than ~78% of boats her size on file

Compared with 1460 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
Ballast / displacement
41.9%
Rig & sail area
Rig
Masthead Sloop
Ratios
Displacement / length
191.7
Comfort ratio
16.5
Capsize screening
2.07
Hull speed
6.1 kn
Pounds / inch immersion
586
Hull
Hull type
Twin Keel
Construction
Fiberglass
Production
Years built
First built 1964
Designer
Thames Structural Plastics
Builder
Thames 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.

Jeanneau Sun Odyssey 24.27.30 mSame hull family0.2 m shorterA Jacques Fauroux-designed fractional sloop built for coastal cruising with a stable fin-and-bulb keel
Dehler Yachts 25CR7.50 mSame hull familyNear-identical lengthA Van de Stadt-designed fractional sloop with a high sail area-to-displacement ratio built for spirited performance
Martinique 257.70 mSame hull family0.2 m longerA Brazilian-built masthead sloop with a 44% ballast ratio, offering a stiff and stable platform for coastal cruising
Cal 257.62 mSame hull family0.2 m longerA flush-deck masthead sloop featuring a pop-top companionway that became one of the most popular models in the fleet
Maxi Yachts 777.70 mSame hull family0.2 m longerThe most popular model in the builder's history, offering both inboard and outboard engine options for versatile cruising
Jaguar 257.62 mSame hull family0.2 m longerA Frank Butler-designed masthead sloop with a deep fin keel, offering a similar layout to the popular Catalina 25

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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