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Review of Defender 17


Basic specs.

sail specifications
The Defender 17 is a small sailing dinghy designed by the American maritime architect Talman Bigelow together with Robert H. Baker also from United States of America in the late sixties.

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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.


Rig

The Defender 17 is equipped with 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.


Keel

CentreBoard

The Defender 17 is equipped with a centreboard keel. A centreboard keel is a pivoting lifting keel, allowing to sail both coastal and inland waters.

The boat can sail close to the beach as the draft is just 0.18 - 0.28 meter (0.59 - 0.89 ft) dependent of the load. See immersion rate below.


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 Defender 17 is about 62 kg/cm, alternatively 347 lbs/inch.
Meaning: if you load 62 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 347 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 Defender 17 is 2.68.

Wide Slim 54% 0 50 100
Compared with other similar dinghies it is slimmer than 54% of all other designs. It seems that the designer has chosen a slightly more speedy hull design.


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 Defender 17 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