Review of Grandezza 28
Basic specs.
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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.
The interior is like many other boats made of mahogany. Mahogany belongs to the hardwood species, known for being water-repellent and resistant to decay. It has an attractive wood grain and holds wood polish and varnish well.
The boat is equipped with 2 cabins, 5 berths, a galley, 150.0 liter fresh water capacity and toilet facility.
Unknown keel type
The boat can enter even shallow marinas as the draft is just about 0.47 - 0.57 meter (1.54 - 1.84 ft) dependent on the load. See immersion rate below.
The Grandezza 28 has been equipped with different engine alternatives.
Alternative 1:
Grandezza 28 may be equipped with dual inboard Volvo Penta engines at 212 hp (157 kW). Max speed is 30.0 knots.
The transmission is a Z-drive aka sterndrive.
Alternative 2:
The boat may be equipped with an inboard MerCruiser gasoline engine at 350 hp (260 kW).
The transmission is a saildrive.
Alternative 3:
The boat may be equipped with dual inboard Ford Marine diesel engines at 280 hp (208 kW). Cruise speed is 7.0 knots. Max speed is 14.0 knots.
The transmission is a Z-drive aka sterndrive.
The fuel tank has a capacity of 400.0 liters (105 US gallons, 87 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.
The immersion rate is defined as the weight required to sink the boat a certain level.
The immersion rate for Grandezza 28 is about 165 kg/cm, alternatively 927 lbs/inch.
Meaning: if you load 165 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 927 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.
What is L/B (Length Beam Ratio)?
The l/b ratio for Grandezza 28 is 2.90.
Curiosities
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
Maintenance
This section is reserved boat owner's modifications, improvements, etc. Here you might find (or contribute with) inspiration for your boat.
Do you have changes/improvements you would like to share? Upload a photo and describe what you have done.
We are always looking for new photos. If you can contribute with photos for Grandezza 28 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.