Review of Standfast 40

Basic specs.

The Standfast 40 is a large sailboat designed in the early seventies. The Standfast 40 is built by the Dutch yard Standfast Yachts.

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Hull

The hull is made of fibreglass. Generally, a hull made of fibreglass requires only a minimum of maintenance during the sailing season.

Keel

Unknown keel type

The boat can only enter major marinas as the draft is about 2.26 - 2.36 meter (7.41 - 7.71 ft) dependent on the load.

Engine

The boat may be equipped with an inboard Volvo Penta MD28 diesel engine at 25 hp (18 kW). Calculated max speed is about 4.7 knots

Sailing characteristics

This section covers widely used rules of thumb to describe the sailing characteristics. Please note that even though the calculations are correct, the interpretation of the results might not be valid for extreme boats.

Theoretical Maximum Hull Speed

What is Theoretical Maximum Hull Speed?

The theoretical maximal speed of a displacement boat of this length is 7.7 knots. The term "Theoretical Maximum Hull Speed" is widely used even though a boat can sail faster. The term shall be interpreted as above the theoretical speed a great additional power is necessary for a small gain in speed.

Sailing statistics

This section is statistical comparison with similar boats of the same category. The basis of the following statistical computations is our unique database with more than 26,000 different boat types and 350,000 data points.

D/L (Displacement Length Ratio)

What is Displacement Length Ratio?

The DL-ratio for Standfast 40 is 259 which categorizes this boat among 'light crusers & offshore racers'.

46% of all similar sailboat designs are categorized as heavier. A heavy displacement combined with smaller water plane area has lower acceleration and is more comfortable.

SA/D (Sail Area Displacement ratio)

What is SA/D (Sail Area Displacement ratio)?

The SA/D for Standfast 40 with ISO 8666 reference sail is 17.1, with a 135% genua the SA/D is 20.6.

The SA/D ratio indicates that it is faster than 46% of all similar sailboat designs in light wind.

Maintenance

Rig

Dimensions of sail.

Are your sails worn out? You might find your next sail here: Sails for Sale

If you need to renew parts of your running rig and is not quite sure of the dimensions, you may find the estimates computed below useful.

**Guiding dimensions of running rig**
Usage	Length		Diameter
Mainsail halyard	38.2 m	(125.2 feet)	12 mm	(1/2 inch)
Jib/genoa halyard	38.2 m	(125.2 feet)	12 mm	(1/2 inch)
Spinnaker halyard	38.2 m	(125.2 feet)	12 mm	(1/2 inch)
Jib sheet	12.2 m	(40.0 feet)	14 mm	(0.55 inch)
Genoa sheet	12.2 m	(40.0 feet)	14 mm	(0.55 inch)
Mainsheet	30.5 m	(100.0 feet)	14 mm	(0.55 inch)
Spinnaker sheet	26.8 m	(88.0 feet)	14 mm	(0.55 inch)
Cunningham	4.2 m	(13.9 feet)	12 mm	(1/2 inch)
Kickingstrap	8.5 m	(27.8 feet)	12 mm	(1/2 inch)
Clew-outhaul	8.5 m	(27.8 feet)	12 mm	(1/2 inch)

Boat owner's ideas

This section is reserved boat owner's modifications, improvements, etc. Here you might find (or contribute with) inspiration for your boat.

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Finally

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References

[Ref 1]: ISO 8666 Small craft — Principal data.
[Ref 3]: ISO 12215-5 Small craft — Hull construction and scantlings.