The sea trial took place off Nisida in short afternoon chop, with four people aboard and the fuel, water and generator tanks around 80% full.
Power came from three Mercury V10 425 hp outboards, controlled through Mercury’s One Lever system.
The large 80 cm ORCA neoprene tubes helped limit roll, while the hull stayed dry and composed when running directly into the waves. Acceleration of this Oromarine 52-C felt strong, especially through the lower and mid-range.
At 30 knots, adjusting the trim reduced total fuel consumption from 220 to around 200 l/h.
The Oromarine 52-C Rigid Inflatable Boat reached 42.2 knots at 6,100 rpm, then achieved about 44 knots during the acceleration run.
Considering the load and cruising setup, the test showed a good balance between comfort, stability and performance.
Test Data
RPM
Speed
Fuel consumption*
650
3.6 kn
12 l/h
1,080
6.1 kn
22 l/h
1,500
8.2 kn
34 l/h
2,200
11.6 kn
76 l/h
2,800
15 kn
93 l/h
3,900
22 kn
180 l/h
4,300
30 kn
200–220 l/h
5,000
35.8 kn
320 l/h
6,100
42.2 kn
380 l/h
Peak
~44 kn
—
source, data may vary *Fuel consumption is the combined figure for all three engines
This video was published on The Sea Team YouTube channel. They always delivers high quality reviews. Check more of their work here.
I’ve published more videos of the Italian Oromarine brand. You can enjoy them here.
I had been looking for some time for the right way to give current RIB news a dedicated place within this growing RIB knowledge platform. And so I found it.
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In a previous review this Rigid Inflatable Boat (RIB) was tested by The Sea Team. Now you can compare it with this one by NonsolomareTV.
This video shows the test of the Ranieri International Cayman 41.0 Hard Top with twin Suzuki DF350 outboards, delivering a combined 700 hp.
The integrated hardtop includes a substantial windscreen, while the helm provides seating for three and a clearly organised instrument layout.
Below deck, the boat offers a forward double berth, two additional sleeping positions, storage space and a separate shower compartment.
During testing, the Cayman reached planing speed progressively, without excessive bow rise, and settled quickly into comfortable cruising speeds.
Around 30 knots, reported fuel consumption was approximately 3 litres per nautical mile, increasing at higher cruising speeds.
Maximum speed reached about 44.5 knots, while high-speed turns showed predictable steering response, limited heel and no reported propeller cavitation.
Test Data
Model
Ranieri Cayman 41.0 Hard Top with Twin Suzuki Outboards
Two independent tests of the same Ranieri Cayman 41.0 Hard Top show similar performance, but notable fuel-consumption differences. Variations may result from fuel and water load, passengers, sea state, weather, trim, and other test conditions.
Comparison point
NonsolomareTV
The Sea Team
Difference
Top speed
44.5 kn
43.7–44 kn
0.5–0.8 kn lower
Speed around 5,000 rpm
34–36.5 kn
35.6–36.8 kn
Very similar
Consumption at 20 kn
2.0 l/nm
3.81–3.89 l/nm*
+91–94%*
Consumption around 30 kn
3.0 l/nm
3.83–3.86 l/nm
+28–29%
Consumption around 5,000 rpm
Approx. 4.0 l/nm
4.85–5.02 l/nm
+21–26%
Comparison table, data may vary *The 20-knot figure requires caution
Remark; At 20 knots, Test 2 indicates 3.81–3.89 l/nm. As this figure is interpolated near the transition to planing, the 91–94% difference should be considered indicative rather than definitive.
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