Review of Flipper 717C

Basic specs.

The Flipper 717C is a small motorboat designed by the Swedish maritime architect Håkan Södergren together with Sigurd Isacson from Finland. The Flipper 717C is built by the Finnish yard Flipper.

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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. And outside the sailing season, just bottom cleaning and perhaps anti-fouling painting once a year - a few hours of work, that's all.

Interior

The interior is like most other boats made of teak. Teak has the advantage of being naturally very oily and therefore water-repellent, which is suitable on boats.
The boat is equipped with 5 berths, a galley, 70.0 liter fresh water capacity and toilet facility.

Keel

Unknown keel type

The boat can enter even shallow marinas as the draft is just about 0.80 - 0.90 meter (2.62 - 2.92 ft) dependent on the load. See immersion rate below.

Engine

Flipper 717C may be equipped with an inboard Volvo Penta AD41 diesel engine at 200 hp (149 kW). The speed is 38.0 knots.

The transmission is a Z-drive aka sterndrive.

The fuel tank has a capacity of 190.0 liters (50 US gallons, 41 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.

Immersion rate

The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for Flipper 717C is about 136 kg/cm, alternatively 766 lbs/inch.
Meaning: if you load 136 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 766 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.

L/B (Length Beam Ratio)

What is L/B (Length Beam Ratio)?

The l/b ratio for Flipper 717C is 2.52.

Compared with other similar motor boats it is more spacy than 93% of all other designs. It seems that the designer has chosen a significantly more spacy hull design.

Curiosities

Powerboat?

In Denmark, you are required to have achieved a 'powerboat driving license' in order to sail a powerboat.
In this context a boat is considered a powerboat if:

Danish definition of a powerboat

According to this definition this boat is categorized as a Powerboat.

Maintenance

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

We are always looking for new photos. If you can contribute with photos for Flipper 717C it would be a great help.

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.