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Article selected from thousand boat trials performed by Nautica in nearly 50 years

Navigation trials

Please remember that the boat model described in this article could be no more available and its price, if indicated, could be outdated as it refers to the Nautica Magazine paper issue

For possible updated information on the model tested in this article and on all other models builded by this shipyard please search our YACHTING CATALOGUE

Text and photographs by Antonio Bignami


The Nibani 31's sea trial was performed with wind over 20 knots and moderately rough sea. They have shown to be excellent conditions for this seaworthy hull which will probably set the standard in its class. This sport-fisherman take advantage from the experience acquired by the Cantieri Costa Smeralda in building the well known Nibani range.

The Nibani 31 feature innovative concepts as well, and, in our opinion, is the most representative Nibani ever built. The boat looks larger than it is, whenever you look at it at berth or at sea, maintaining its sleek lines in both situations. In addition, the stability and the trim are always excellent. All this result in an outstanding seakeepness, compared to the boat's size, which I believe is one of the most valuable achievement of the Nibani 31. The boat has been designed and built perfectly and will surely be appreciated by the experienced yachtsman. Particular attention has been paid to practicability, so important on sport-fishing boats; comfort and habitability, on the other hand, were not disregarded and the boat is perfect for cruising as well.

Below deck the Nibani 31 has accommodations for up to four persons; a dinette, a completely equipped galley area and a spacious bathroom with teak floor and shower are the main features. Detailing is elegant and sober, transmitting to the boat a unique style happily combined with the beautiful hull and superstructure colors. The Nibani 31 is, in conclusion, a cruising sport-fisherman built, with particular style, by the renown Cantieri Costa Smeralda which ensure a positive quality to price ratio as well.


Builder: Cantieri Costa Smeralda; 07020 Porto Cervo Marina (SS) Italy; tel.: +39-789-91444; Commercial Office: 16100 Genova, Italy; piazzale Kennedy PO Box 9; tel.: +39-10-5531823
Project by: Cantieri Costa Smeralda
Register length: 9.30 mt
Max. beam: 3.54 mt
Max. draft: 0.75 mt
Light displacement: 2500 kg
Full load displacement: 3500 kg
Max. passengers capacity: 12 persons
Engines: 2x315 hp Cummins
Total installed power: 630 hp
Transmission: shaft line
Engines weight (reduction gear included): 1160 kg
Top speed (declared): 35 knots
Fuel capacity: 850 liters
Fresh water capacity: 150 liters
Cruise speed fuel consumption: 60 l/h
Tested boat price: 235.000.000 Lit. (VAT not included)


Teak swimming platform with ladder, transom hatch, transom sink, cockpit shower, 220 V. shore-line socket, salt water deck washing plant, cockpit sink and live well, 2 persons pilot seat, 4 persons cockpit settee, hand rail, two bow cleats with fairleads, electric winch, bow hatch.


Tuna tower, second steering station, radar arch.


wind: NNW 20/25 knots
sea state: force 3/4

Planning time: 5 seconds
Stopping time from cruise speed: 5 seconds
Stopping time from top speed: 6 seconds
Top speed: 35 knots at 2800 rpm
Cruise speed: 28 knots at 2200 rpm


Construction material and detailing: hand laid-up fiberglass, deep V hull, beak and swimming platform, stainless steel bow handrail. Toughened glass windshield.
Lockers number and place: 4 on the cockpit's sole, 1 at the bow and several below deck.
Deck: beak and bow handrail, swimming platform, tuna tower (optional), self draining cockpit.
Interiors: convertible V shaped double bed, convertible settee on the port side, separated bathroom on the starboard side, galley area with drawer unit, stainless steel sink, 75 liters refrigerator, two burners stove, hanging lockers and storage space. All furniture are made of teak wood.
Steering comfort: hydraulic steering, throttles, engine monitoring instruments and gauges, compass, VHF with antenna, electronic instruments predisposition.