Review of Bianca Lido

Bianca Lido
Bianca Lido anno 1985. Sofie 2003

Basic specs.

boat specifications
The Bianca Lido is a sailboat designed by the Danish maritime architect bureau Elvstrøm & Kjærulff in the early eighties. The Bianca Lido is built by the Danish yard Bianca Yacht I/S.

Looking for a new boat? Find a Bianca Lido or similar boat for sale

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

The interior is like many other boats made of mahogany.
The boat is equipped with 5-7 berths, a galley and toilet facility.
Note: the boat has also been sold to be self-made/-interiored, which means that the quality of each boat may vary.

The boat has 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.

Bianca Lido has a fin keel which means that it is more manoeuvrable but has less directional stability than a similar boat with 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 finn 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 1.65 - 1.75 meter (5.41 - 5.71 ft) dependent on the load. See immersion rate below.

The boat is typical equipped with an inboard Volvo Penta engine at 18.0 hp (13 kW), which gives a max speed about 4.9 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 40 liters (10 US 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.

Stability and Safety
What is Capsize Screening Formula (CSF)?
The capsize screening value for Bianca Lido is 1.95, 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 6.5 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 Bianca Lido is about 154 kg/cm, alternative 864 lbs/inch.
Meaning: if you load 154 kg cargo on the boat then it will sink 1 cm. Alternative, if you load 864 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 22,000 boat types and 350,000 data points.

Motion Comfort Ratio
What is Motion Comfort Ratio (MCR)?
The Motion Comfort Ratio for Bianca Lido is 22.0 - 26.0.

Low High 66% 0 50 100
Comparing this ratio with similar sailboats show that it is more comfortable than 66% of all similar sailboat designs. A comfort value is just above average.

L/B (Length Beam Ratio)
What is L/B (Length Beam Ratio)?
The l/b ratio for Bianca Lido is 2.86.

Slim Wide 76% 0 50 100
Compared with other similar sailboats it is more spacy than 76% of all other designs. It seems that the designer has chosen a significantly more spacy hull design.

Ballast Ratio
What is a Ballast Ratio?
The ballast ratio for Bianca Lido is 40%.

Low High 46% 0 50 100
This ballast ratio shows a righting moment that is higher than 46% of all similar sailboat designs. A righting moment (ability to resist heeling) just below average.

D/L (Displacement Length Ratio)
What is Displacement Length Ratio?
The DL-ratio for Bianca Lido is 309 which categorizes this boat among 'medium weight cruisers'.

Heavy Light 27% 0 50 100
27% of all similar sailboat designs are categorized as heavier. A heavy displacement combined with smaller water plane area has lower acceleration and is more comfortable.

SA/D (Sail Area Displacement ratio)
What is SA/D (Sail Area Displacement ratio)?
The SA/D for Bianca Lido with ISO 8666 reference sail is 16.4, with a 135% genua the SA/D is 19.4.

Low High 54% 0 50 100
The SA/D ratio indicates that it is faster than 54% of all similar sailboat designs in light wind.

RSP (Relative Speed Performance)
What is Relative Speed Performance?
The Relative Speed Performance for Bianca Lido is 76

Slow Fast 76% 0 50 100
The relative speed performance is 76 which means that a it is faster than 76% of all similar sailboat designs.


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 26m2 (279 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.

Dimensions of sail for masthead rig.
mainsail specifications genoa specifications spinnaker specifications
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
Mainsail halyard 30.0 m(98.6 feet)10 mm(3/8 inch)
Jib/genoa halyard30.0 m(98.6 feet)10 mm(3/8 inch)
Spinnaker halyard30.0 m(98.6 feet)10 mm(3/8 inch)
Jib sheet 9.2 m(30.0 feet)12 mm(1/2 inch)
Genoa sheet9.2 m(30.0 feet)12 mm(1/2 inch)
Mainsheet 22.9 m(75.0 feet)12 mm(1/2 inch)
Spinnaker sheet20.1 m(66.0 feet)12 mm(1/2 inch)
Cunningham3.8 m(12.3 feet)10 mm(3/8 inch)
Kickingstrap7.5 m(24.6 feet)10 mm(3/8 inch)
Clew-outhaul7.5 m(24.6 feet)10 mm(3/8 inch)

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