Dehler 343 anno 1987. Dehler 343 Nova

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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.

The deck is a double deck which improves the indoor climate.

The deck is a double deck which improves the indoor climate.

Interior

The boat is equipped with 3 cabins, 6 berths, a galley and toilet facility.

Rig

The boat 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 genaker or a spinnaker for optimal speed.

Keel

The Dehler 343 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 1.70 - 1.80 meter (5.58 - 5.88 ft) dependent on the load. See immersion rate below.

Engine

Dehler 343 is typically equipped with an inboard Yanmar 2G diesel engine at 18.0 hp (13 kW), which gives a max speed about 5.5 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 60.0 liters (15 US gallons, 13 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 Dehler 343 is 2.12, indicating that this boat would not 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 7.1 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 Dehler 343 is about 195 kg/cm, alternatively 1097 lbs/inch.

Meaning: if you load 195 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 1097 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 Dehler 343 is 19.0.

L/B (Length Beam Ratio)

What is L/B (Length Beam Ratio)?

The l/b ratio for Dehler 343 is 3.12.

Ballast Ratio

The ballast ratio for Dehler 343 is 43%.

D/L (Displacement Length Ratio)

What is Displacement Length Ratio?

The DL-ratio for Dehler 343 is 184 which categorizes this boat among 'light racers'.

RSP (Relative Speed Performance)

What is Relative Speed Performance?

The Relative Speed Performance for Dehler 343 is 69

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 33m^{2} (355 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

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 | ||

Jib sheet | 10.6 m | (34.8 feet) | 14 mm | (0.55 inch) |

Genoa sheet | 10.6 m | (34.8 feet) | 14 mm | (0.55 inch) |

Mainsheet | 26.5 m | (86.9 feet) | 14 mm | (0.55 inch) |

Spinnaker sheet | 23.3 m | (76.5 feet) | 14 mm | (0.55 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 Dehler 343 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