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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 interior is like many other boats made of mahogany.

The boat is equipped with 7 berths, a galley and toilet facility.

The boat is equipped with 7 berths, a galley and toilet facility.

Rig

The boat 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

The Najad 371 is equipped with a fin keel. The fin keel is the most common keel and provides splendid manoeuvrability. The downside is that it has less directional stability than a long keel.

The keel is made of iron.
Many people prefer lead keel in favour of iron.
The main argument is that lead is much heavier than iron and a lead keel can therefore be made smaller which again result in less wet surface, *i.e.* less drag.
In fact iron is quite heavy, just 30% less heavy than lead, so the advantage of a lead keel is often overstated.
As the surface of a fin type keel is just a fraction of the total wet surface,
the difference between an iron keel and a lead keel can in reality be ignored for cruising yachts.

The boat can enter most marinas as the draft is just about 1.75 - 1.85 meter (5.74 - 6.04 ft) dependent on the load. See immersion rate below.

Engine

Najad 371 is typically equipped with an inboard Volvo Penta MD21B diesel engine at 61.0 hp (45 kW), which gives a max speed about 7.4 knots.

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

The fuel tank which is made of stainless steel has a capacity of 300.0 liters (79 US gallons, 65 imperial gallons).

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 Najad 371 is 1.70, 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 7.6 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 Najad 371 is about 227 kg/cm, alternatively 1273 lbs/inch.

Meaning: if you load 227 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 1273 lbs cargo on the boat it will sink 1 inch.

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 Najad 371 is 35.3.

L/B (Length Beam Ratio)

What is L/B (Length Beam Ratio)?

The l/b ratio for Najad 371 is 3.23.

Ballast Ratio

The ballast ratio for Najad 371 is 41%.

D/L (Displacement Length Ratio)

What is Displacement Length Ratio?

The DL-ratio for Najad 371 is 274 which categorizes this boat among 'light crusers & offshore racers'.

SA/D (Sail Area Displacement ratio)

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

The SA/D for Najad 371 with ISO 8666 reference sail is 13.5, with a 135% genua the SA/D is 15.9.

Over- / underrigged

RSP (Relative Speed Performance)

What is Relative Speed Performance?

The Relative Speed Performance for Najad 371 is 4

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 38m^{2} (409 ft^{2}).

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.

Usage | Length | Diameter | ||

Mainsail halyard | 33.4 m | (109.7 feet) | 12 mm | (1/2 inch) |

Jib/genoa halyard | 33.4 m | (109.7 feet) | 12 mm | (1/2 inch) |

Spinnaker halyard | 33.4 m | (109.7 feet) | 12 mm | (1/2 inch) |

Jib sheet | 11.3 m | (37.1 feet) | 14 mm | (0.55 inch) |

Genoa sheet | 11.3 m | (37.1 feet) | 14 mm | (0.55 inch) |

Mainsheet | 28.2 m | (92.7 feet) | 14 mm | (0.55 inch) |

Spinnaker sheet | 24.9 m | (81.6 feet) | 14 mm | (0.55 inch) |

Cunningham | 4.3 m | (14.1 feet) | 12 mm | (1/2 inch) |

Kickingstrap | 8.6 m | (28.2 feet) | 12 mm | (1/2 inch) |

Clew-outhaul | 8.6 m | (28.2 feet) | 12 mm | (1/2 inch) |

Boat owner's ideas

This section shown boat owner's changes, improvements, etc. Here you might find inspiration for your boat.

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

Finally

We are always looking for new photos. If you can contribute with photos for Najad 371 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