Review of Acapulco 40

Basic specs.

The Acapulco 40 is a large sailboat designed by the American maritime architect Ted Carpentier in the mid seventies. The Acapulco 40 is built by the American yard Acapulco Yacht Corp..

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Hull

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

Interior

The boat is equipped with one cabin, 6 berths, a galley, 909.0 liter fresh water capacity, toilet facility and 64.0 liter waste water capacity.

Rig

Rig of Acapulco 40 anno 1976. Hull #1 by Gary Powell

The Acapulco 40 is equipped with a masthead rig. The advantage of a masthead rig is its simplicity and the fact that a given sail area - compared with a fractional rig - can be carried lower and thus with less heeling moment.

Keel

Unknown keel type

The boat can enter most marinas as the draft is just about 1.65 - 1.75 meter (5.41 - 5.71 ft) dependent on the load. See immersion rate below.

Engine

The Acapulco 40 has been equipped with different engine alternatives.

Alternative 1:

Acapulco 40 may be equipped with an inboard Volvo Penta MD22P diesel engine at 52 hp (38 kW). Cruise speed is 7.0 knots. Max speed is 8.0 knots.

The transmission is a shaft drive. A shaft drive will in the long run require less maintenance than other types of drive e.g. a sail drive.

Alternative 2:

The boat may be equipped with a Isuzu diesel engine at 40 hp (29 kW). Calculated max speed is about 5.9 knots.

The transmission is a shaft drive. A shaft drive will in the long run require less maintenance than other types of drive e.g. a sail drive.

The fuel tank has a capacity of 545.0 liters (143 US gallons, 119 imperial gallons).

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.

Stability and Safety

What is Capsize Screening Formula (CSF)?

The capsize screening value for Acapulco 40 is 1.95, indicating that this boat could - if evaluated by this formula alone - be accepted to participate in ocean races.

Theoretical Maximum Hull Speed

What is Theoretical Maximum Hull Speed?

The theoretical maximal speed of a displacement boat of this length is 7.3 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.

Immersion rate

The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for Acapulco 40 is about 241 kg/cm, alternatively 1351 lbs/inch.
Meaning: if you load 241 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1351 lbs cargo on the boat it will sink 1 inch.

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.

Motion Comfort Ratio

What is Motion Comfort Ratio (MCR)?

The Motion Comfort Ratio for Acapulco 40 is 28.9.

Comparing this ratio with similar sailboats show that it is more comfortable than 46% of all similar sailboat designs. This comfort value is just below average.

L/B (Length Beam Ratio)

What is L/B (Length Beam Ratio)?

The l/b ratio for Acapulco 40 is 3.07.

Compared with other similar sailboats it is more spacy than 73% of all other designs. It seems that the designer has chosen a slightly more spacy hull design.

Ballast Ratio

What is a Ballast Ratio?

The ballast ratio for Acapulco 40 is 28%.

This ballast ratio shows a righting moment that is higher than 5% of all similar sailboat designs. A righting moment (ability to resist heeling) significantly below average.

D/L (Displacement Length Ratio)

What is Displacement Length Ratio?

The DL-ratio for Acapulco 40 is 310 which categorizes this boat among 'medium weight cruisers'.

24% 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 Acapulco 40 with ISO 8666 reference sail is 15.4, with a 135% genua the SA/D is 18.3.

The SA/D ratio indicates that it is faster than 27% of all similar sailboat designs in light wind.

Over- / underrigged

The Acapulco 40 has more rig than 99% of all similar sailboats, which indicates that the boat is significantly overrigged.

Maintenance

Bottom Paint

When buying anti-fouling bottom paint, it's nice to know how much to buy. The surface of the wet bottom is about 38m² (409 ft²).
Based on this, your favourite maritime shop can tell you the quantity you need.

Note: If you use a paint roller you will need more paint than if you use a paintbrush.

Rig

Dimensions of sail for masthead rig.

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	32.0 m	(104.9 feet)	12 mm	(1/2 inch)
Jib/genoa halyard	32.0 m	(104.9 feet)	12 mm	(1/2 inch)
Spinnaker halyard	32.0 m	(104.9 feet)	12 mm	(1/2 inch)
Jib sheet	12.1 m	(39.7 feet)	14 mm	(0.55 inch)
Genoa sheet	12.1 m	(39.7 feet)	14 mm	(0.55 inch)
Mainsheet	30.2 m	(99.2 feet)	14 mm	(0.55 inch)
Spinnaker sheet	26.6 m	(87.3 feet)	14 mm	(0.55 inch)
Cunningham	4.9 m	(16.0 feet)	12 mm	(1/2 inch)
Kickingstrap	9.8 m	(32.0 feet)	12 mm	(1/2 inch)
Clew-outhaul	9.8 m	(32.0 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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If you have any comments to the review, improvement suggestions, or the like, feel free to contact us. Criticism helps us to improve.

References

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