Review of Finngulf 38

Basic specs.

The Finngulf 38 is a sailboat designed by the Swedish maritime architect Håkan Södergren in the mid nineties. The Finngulf 38 is built by the Finnish yard Finngulf Yachts.

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Hull

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

Rig

The boat has more than one rig.

One option is a fractional rig. A fractional rig has smaller headsails which make tacking easier, which is an advantage for cruisers and racers, of course. The downside is that having the wind from behind often requires a gennaker or a spinnaker for optimal speed.

Another option is 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

Fin keel

The Finngulf 38 is equipped with a fin keel. A boat with a fin keel is more manoeuvrable but has less directional stability than a similar boat with a full keel.

The boat can only enter major marinas as the draft is about 1.89 - 1.99 meter (6.20 - 6.50 ft) dependent on the load. See immersion rate below.

Engine

Finngulf 38 may be equipped with an inboard Volvo Penta 2003 diesel engine

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 Finngulf 38 is 1.91, 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 7.5 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 Finngulf 38 is about 221 kg/cm, alternatively 1239 lbs/inch.
Meaning: if you load 221 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1239 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 Finngulf 38 is 24.1.

Comparing this ratio with similar sailboats show that it is more comfortable than 27% 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 Finngulf 38 is 3.37.

Compared with other similar sailboats it is slimmer than 62% of all other designs. It seems that the designer has chosen a slightly more speedy hull design.

Ballast Ratio

What is a Ballast Ratio?

The ballast ratio for Finngulf 38 is 62%.

This ballast ratio shows a righting moment that is higher than 100% of all similar sailboat designs. A righting moment (ability to resist heeling) significantly above average.

D/L (Displacement Length Ratio)

What is Displacement Length Ratio?

The DL-ratio for Finngulf 38 is 189 which categorizes this boat among 'light racers'.

76% of all similar sailboat designs are categorized as heavier. A light displacement requires less sailarea and has higher accellerations.

SA/D (Sail Area Displacement ratio)

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

The SA/D for Finngulf 38 with ISO 8666 reference sail is 18.4, with a 135% genua the SA/D is 21.7.

The SA/D ratio indicates that it is faster than 66% of all similar sailboat designs in light wind.

Over- / underrigged

The Finngulf 38 has more rig than 24% of all similar sailboats, which indicates that the boat is significantly underrigged.

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**
Masthead rig
Usage	Length		Diameter
Mainsail halyard	33.8 m	(110.7 feet)	12 mm	(1/2 inch)
Jib/genoa halyard	33.8 m	(110.7 feet)	12 mm	(1/2 inch)
Spinnaker halyard	33.8 m	(110.7 feet)	12 mm	(1/2 inch)
Jib sheet	11.6 m	(38.0 feet)	14 mm	(0.55 inch)
Genoa sheet	11.6 m	(38.0 feet)	14 mm	(0.55 inch)
Mainsheet	28.9 m	(95.0 feet)	14 mm	(0.55 inch)
Spinnaker sheet	25.5 m	(83.6 feet)	14 mm	(0.55 inch)
Cunningham	4.6 m	(15.0 feet)	12 mm	(1/2 inch)
Kickingstrap	9.1 m	(30.0 feet)	12 mm	(1/2 inch)
Clew-outhaul	9.1 m	(30.0 feet)	12 mm	(1/2 inch)
Fractional rig
Usage	Length		Diameter
Jib sheet	11.6 m	(38.0 feet)	14 mm	(0.55 inch)
Genoa sheet	11.6 m	(38.0 feet)	14 mm	(0.55 inch)
Mainsheet	28.9 m	(95.0 feet)	14 mm	(0.55 inch)
Spinnaker sheet	25.5 m	(83.6 feet)	14 mm	(0.55 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.

Do you have changes/improvements you would like to share? Upload a photo and describe what you have done.

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.