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NAUTICA MAGAZINE
NAVIGATION TEST

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that the boat model described in this article could be no more available and its price, if indicated, could be outdated as it refers to the Nautica Magazine paper issue

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Text and photographs by Roberto Moneda

RIO 850 CRUISER

With this new model, Rio industries has achieved a day cruiser generous in living space and useful solutions to the life on board. With a register length of 7,5 meters only, the boat is in reality one meter longer, to the full advantage of cockpit and underdeck spaces. The new 850 Cruiser has a very spacious cockpit incorporating a "U" shaped dinette, convertible into a sun-lounge on the starboard side, and a wide passage on the port connecting the comfortable swimming-platform to the main cabin hatch.

Below deck simplicity and fittings accuracy are the main characteristics: forward the dinette can be converted into a real comfortable double bed by the simple rotation of the two side settees. On the port side the galley area has a nice looking anti-shock material, incorporating the sink. The toilet space is located on the starboard side and is fitted with sink. shower and lockers. It has a practical two door access, one leading to the galley, the other to the aft guest cabin. The latter is particularly well conceived with full size entrance, lockers and a double bed with a sliding porthole to the cockpit guaranteeing plenty of light and air. The craft on trial was fitted with twin 145 hp out-drives which are the basic engine option; they are also the right choice, price wise and are sufficient to guarantee a 30 knots top speed.

TECHNICAL DATA

Builder: Rio, piazza Stazione 1, 24067 Sarnico (BG) Italy, tel. +39 35 910401; fax 911119
Project by: Carlo Scarani
LOA: 8.73 mt
Hull length: 7.49 mt
Max. beam: 3.00 mt
Molded depth: 2.60 mt
Max. draft: 0.46 mt
Displacement: 2820 kg
Max. passengers capacity: 8 persons
Engines: 2x Mercruiser MCM 3.0 LX 145 hp each
Total installed power: 290 hp
Transmission: out drive
Engines weight: 285x2 kg (reduction gears included)
Top speed (declared): 30 knots
Fuel capacity: 320 liters
Fresh water capacity: 190 liters
Berths: 4 in 4 cabins
Tested boat price: 122.000.000 Lit (VAT not included)

STANDARD EQUIPMENT

Liferaft compartment; anchor with chain and rope; antifoulding; stern davits foundations; engines and auxiliary batteries; tool bag; stainless steel bow roller and beak; pilot seat; cockpit shower; fuel line electrovalve; cabin and cockpit fire extinguishers; stern and bow towing brackets; pressurized water plant; engine room noise insulation; galley with stove and refrigerator; windshield; swimming platform with ladder and door to the cockpit; electric / manual bilge pump; self drain cockpit; magnetotermic switches on main electrical board; stainless steel water and fuel tanks; engine instruments; hydraulic steering gear; horn.

OPTIONAL

safety equipment; cockpit tarpaulin; battery charger with shore line; engine running hours counter; forward sun pad; shower (in the toilet); depth sounder; search light; davits; cradle; GPS Pan Navigator; Loran; liferaft; gangway; forward hatch; fishing rod and boom holders; stereo; VHF; electric windlass with chain; watertight tarpaulin; sunshade tarpaulin.

TRIAL RESULTS

SEA AND WEATHER CONDITIONS AT TRIAL TIME
wind: -
sea state: calm

OBSERVED PERFORMANCES
Planning time: 8.3"
Top speed: 28.9 knots @ 4780 rpm
Cruise speed: 22 knots @ 3850 rpm

COMFORT AND FUNCTIONALLY EVALUATION

Construction material and detailing: hand lay-up reinforced fiberglass; V shaped planning hull; aluminum bow handrail; forward deck stainless steel longitudinal grabrail; side deck with non skid surface; integral bow beak
Lockers number and place: 4 in the cockpit; several under deck
Steering station: to the starboard side with control panel; sporty MOMO helm; two throttles to the right; pilot and co-pilot seats
Deck: spacious cockpit with step up to the steering station; effective windshield; stern lateral davits foundations;
Stern fenders holder: cockpit to swimming platform fiberglass door
Interiors: roomy convertible forward cabin; coordinate fabrics and upholstery; dinette; moquette covered cabin sole and sky lined ceiling; marine plywood doors and bulkheads; dimmer lights.