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that the boat model described in this article could be no more available and its price, if indicated, could be outdated as it refers to the Nautica Magazine paper issue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

Cantiere Nautico Rinaldi

Cantiere Nautico Rinaldi, Sintesi 45

The Sintesi 45 is the new sailing boat of the Rinaldi yard that we tested in San Remo (Italy).

Cantiere Nautico Rinaldi, Sintesi 45 She is the result of the joint collaboration of two renowned persons in the yachting world. These two friends, the designer and the owner of the yard, not only have a great passion in common but also their first name: Ettore. Santarelli, is the designer and Rinaldi is the builder. Together they designed and built a fast offshore cruiser, with an especially elegant outline and racing characteristics. This sailing boat is capable of satisfying all requests of the keenest sailor as far as interior comfort is concerned. Sintesi 45, with a total of 10 units built so far, is both performance-oriented for the sailor who wants to participate in regattas and compete with the fastest hulls of the same class, as well as cruising-oriented for the owner who wants a comfortable 45 footer. There are two versions - IMS and Club - as far as the interior layout is concerned. Different technical solutions may be requested depending on whether it is to be an aggressive racer or a comfortable cruiser. We carried out the sea trials onboard "Cipria" owned by the Sanremo-based company Veladoc, which uses it for offshore cruising courses as well as for chartering in the Mediterranean Sea together with two other sister vessels. "Cipria" is often used for racing therefore it sets hi-tech racing sails as well as a very light and strong carbon-fiber spinnaker pole.


Designers: Ettore Santarelli & Ettore Rinaldi
Yard: Cantiere Nautico Rinaldi, via Europa 11, 25040 Monticelli Brusati (Brescia -Italy), tel./fax +39-30-653225
Gross tonnage: 16,06 t
LOA: 44'4" ft
Hull length: 44'4"
LWL: 37'8"
Beam: 11'6"
Draft: 7'3"
Displacement: 13,245 lbs.
Ballast: 3,973 lbs.
Ballast/displacement ratio: 32.8%
Test power: Volvo 2030 28 HP Diesel
Maximum speed under power: 9 knots
Maximum theoretical sailing speed: 14 knots
Fresh water capacity: 53+26 gallons
Bathrooms: 2
Berths: 9 (3 cabins + 1 berth in the dinette)
Maximum passengers capacity: 9
Mast rigging: 9/10
Mast: 52'6" high
Sail area: 969 sq ft
Genoa: 484 sq ft
Mainsail: 484 sq ft
Spinnaker: 1216 sq ft
Price: Lit. 280,000,000 (ex VAT).


Keel: lead
Hull and deck: GRP & sandwich
Rudder: carbon fiber blade (on request)
Hull-to-deck joint: box type plus sheathing
Keel to hull connection: 10 1"3/16-dia. thru bolts
Foredeck arrangement: clear
Hardware: Harken
Running rigging: all halyards and lines are led to the cockpit
Steering: wheel
Cockpit space: wide
Companionway: central ladder
Inflatable raft: stowed in front of the steering wheel
Swimming ladder: aft, molded steps in the middle of the transom.


Wind: 3/4 knots
Sea conditions: glassy to calm


Visibility: very good in all conditions despite the relatively high deckhouse
Close-hauled and abeam: excellent upwind performance, due to the excellent sail ratio during sea trials. When sailing cross wind she behaves like a racer
Running and broad reaching: very good results under main and spinnaker. Very little wind is sufficient for the Sintesi 45 to glide, as if it sailed faster than the wind
Course steadiness: the big steering wheel allows tiny course corrections and the light carbon-fiber rudder is very responsive
Wave impact: the hull bottom is designed to comfortably plow the waves
Under power: the boat runs very well due to her excellent propeller. She is ideal for chartering because she allows comfortable long-distance passages at an average speed of 7-8 knots
Engine vibrations: minimal on deck and slightly higher belowdecks at low and medium speed because the engine is installed under the access ladder, inside the aft cabin
Docking capabilites: good thanks to the steering wheel and the correct positioning of the propeller.


Hull: Santarelli succeeded in creating a nice and performing hull, which is responsive to any small movement. Stability is slightly penalized in favor of speed. The wing-shaped keel with steel blade and bulb allows a good righting moment
Sail plan: mainsail and headsail. In this case "Cipria" sets a very good headsail, a standard mainsail and a good asymmetrical spinnaker. Standard sail area is more than enough to sail in any sea conditions
Deck: the high deckhouse slightly unbalances overall side and front design of the boat, nevertheless, it considerably improves comfort below deck. Deck fittings are well arranged and are suitable to the boat design. This racing version was fitted with extra block and fittings.


Building materials: first-quality materials traditionally used by this yard accustomed to build very fast composite sailboats
Finishing: good, to be improved in some areas (for example, below decks hand work is not always perfect)
Interiors layout: the tested Sintesi 45 layout includes two aft symmetrical cabins, a small galley to port, opposite the comfortable and practical chart table to starboard. In the middle, there is the dinette with opposite settees and central wooden table. Forward of the dinette there is a starboard passage - fitted with a small seat - which leads to the forward cabin and, to port, there is the only one comfortable bathroom. The Sintesi 45 Club version has three cabins, two bathrooms and the galley is slightly forward to starboard. Marine wood bulkheads and doors and Alcantara ceilings give the interiors an overall elegant look.
Deck - Fore-and-aft passage: average because the shrouds slightly hinder the stringers. On request, they can be connected to external chainplates on the sidedecks to improve passage
Antislipping material: good. Yet, application of gripping tape is suggested in some areas.
Stanchions: fixed on three points with stainless steel base and support
Grabrails: railings, no handholds on the coachroof
Forward arrangement: clean and practical. Chain roller with stainless steel support also used as a teak step for boarding.
Safety: excellent in the tested boat. This version was fitted with fore-and-aft safety lines along the walking surface. The fiberglass toe-rail is molded in the GRP and it is a good foothold
Anchor locker: oversized and with hatch, fitted with a chain pipe for the anchor line
Fairleads: not contemplated. The two forward and aft mooring cleats are placed in way of the toe-rail holes
Mooring cleats: 4 suitably positioned stainless steel cleats.

Rigging and fittings
Mast: 9/10 three suitably positioned spreader orders
Boom: light aluminum alloy, with holes, high above the cockpit
Shrouds: first-quality and well positioned. Running backstays on request
Sails: standard sails are in high-quality dacron. Sails of mixed kevlar on tested boat were excellent.
Steering: big wheel
Jib: with standard furling system, easily controlled from the cockpit
Mainsail: two reefing points without reef cringle on the leech
Winches: 4 self-tailing two-speed Harken winches. 10 stoppers on the coachroof, halyard and sheet blocks at the bottom of the mast
Winch quality: very good
Headsail: 2 suitably positioned sheet leads
Mainsheet traveler: is of suitable size and is located in the middle of the cockpit
Engine controls: single throttle with ignition key and fuel closing switch in the inside starboard bottom part of the cockpit
Sailing instruments: the tested boat was fitted with wind speed and direction indicator, log and GPS.
Standard instruments: compass opposite the steering wheel, wind speed and direction indicator and log
Engine instruments: fuel gauge, rpm counter.

Design: wide, with rounded-angle settees and clear transom. The aft deck may be requested in GRP
Comfort: good, for 6 persons plus the helmsman
Helm station: very practical, nevertheless, the steering wheel seems to be slightly too big making it difficult to go rapidly aft
Engine noise during cruising: approx. 65 db; hardly audible
Engine vibrations during cruising: almost none
Lockers: two big lockers aft, opposite each other
Cockpit table: not contemplated
Shower on deck: not fitted
Inflatable raft: stowed in its compartment in front of the steering wheel
Swimming platform on the transom facilitates boarding; the swimming ladder is supplied as optional. Companionway ladder: Accessibility: easy access, with sliding hatch
Safety: excellent, due to the wide steps and the grabrails on the sides
Water tightness: sufficient, it could be improved by creating an upper double sill (contemplated)
Closing system: GRP and wooden hatch with locking key.

Headroom: max 5'10"
Comfort: excellent for 6/8 persons, with possible berths for 2/3 persons
Table: 3'11"x2'9", rectangular, with two folding ends
Ventilation: excellent everywhere
Natural lighting: good thanks to the hatch and to the 5 opening portholes
Artificial lighting: sufficient with rotating spotlights, overhead and embedded lights
Handholds: few yet suitably positioned
Lockers and shelves: several lockers, closed with doors with marine type opening and inner catch
Engine vibrations during cruising: slight and negligible considering the comfort on board
Locker volume: sufficient for long passages or coastal cruising. Navigation station
Chart table: 3'3"x2'7" with small folding seat
Comfort: excellent, apart from the small seat
Space for electronic instruments: ample space and located near the electrical panel for connections
Natural lighting: fair
Artificial lighting: good, with snake-like red light and overhead light.
Safety: good, thanks to the available surrounding space
Engine vibrations during cruising: hardly audible
Locker volume: more than enough.

Forward cabin
Headroom: max. 5'7"
Berth overhead min/max: 2'8"/3'7"
Bed length: 6'4"
Bed width: max. 6'1"
Ventilation: good thanks to the big hatch
Natural lighting: good
Artificial lighting: an overhead light and two rotating spotlights
Locker volume: ample; spare sails may be stored under the bed
Engine vibrations during cruising: absent.

Twin aft cabins
Headroom: max. 5'7"
Berth overhead min/max: 1'3"/2'11"- Bed length: 6'4"
Bed width: 4'8". Ventilation: average with wide access door and opening porthole.
Natural lighting: sufficient
Artificial lighting: good with overhead light and rotating spotlight
Locker volume: perfect, fitted with standard hanger
Engine vibrations and noise: noticeable, especially when running above average speed.

Headroom: max. 5'9"
Sink: one stainless steel L-shaped sink near the stove
Fresh water: cold with pressure pump
Sea water: yes
Stove: 2 burners and oven; gimbaled
Extractor: opening porthole over the stove
Worktop surface: sufficient, the dinette table must be used as well
Refrigerator: yes, electric type
Locker and cupboard volume: ample
Comfort: highly practical
Ventilation: opening porthole above, companionway hatch
Natural lighting: excellent
Artificial lighting: nearby overhead light
Safety: excellent
Engine vibrations during cruising: audible but not disturbing.

Headroom: max. 5'8"
Sink: stainless steel
Comfort: correct height and sufficient space
Toilet: manual and suitably positioned
Locker volume: enough for personal toiletry
Ventilation: fair, opening porthole
Natural lighting: good
Artificial lighting: sufficient
Engine vibrations during cruising: minimal.

Engine room
Noise insulation: fair
Access: difficult front access; good side access, even from the aft cabins; excellent top and bottom access
Oil gauge access: fair
Gearbox access: good
Ventilation: natural with air vents. Auxiliaries:
Electrical panel: easy comprehension and easy access above the chart table
Electrical plant: 12 volt with socket for 220V dockside connection
Batteries: 2
Fuel tank: sufficient capacity for long passages
Water tank: 80 gallons
Bilge pumps: electrical and manual
Hydraulic plant: good quality.

excellent sailing performance; more than adequate deck fittings; the possibility of customizing the interiors on request.
the heavy outline of the deckhouse; missing handholds on the coachroof; missing shower on deck and missing swimming ladder.