OLR 40SR – 3 x 500Rs V8
Olympic 30SR – Twin 4.2L 300hp Yamahas
OLR 40SR – 3 x 500Rs V8
Olympic 30SR – Twin 4.2L 300hp Yamahas
Mazziena 26SP – V10 400hp Mercury
If we accept that the speed of a boat can develop in bad weather conditions safely and without straining the occupant is one of the most important criteria for her seaworthiness, then there is no doubt that Mazziena 26SP has a particularly seaworthy hull that can travel through rough seas, as long as we have the appropriate experience and the ability to drive aggressively.
Mazziena 26SP belongs to the category of deep-V inflatable boats, designed to be able to travel in the demanding Aegean Sea, while at the same time offering all the comforts for nautical camping and the necessary autonomy for multi-day getaways. You can read the characteristics of its hull and deck at the following link.
This time, our test boat was powered by the V10 400hp Mercury engine, which with a gear ratio of 2.08:1 was turning the 18΄΄x 21΄΄ 4-blade Revolution X stainless steel propeller.
With 200 liters of fuel, 100 liters of water, two crew members and all the equipment of the boat except the auxiliary engine, we found ourselves on the water with NE winds of 5-6 Beaufort.
Having once again the opportunity to evaluate the capabilities of 26SP hull, we set sail and tested her in every direction of the waves. The boat responded wonderfully to the headwinds and sternwinds, maintaining a very good riding angle with high-level damping, while once again she showed us her very robust construction.
Mazziena 26SP showed that she was feeling very good with the 400 horses on her transom, with immediate throttle response and fast acceleration which allowed us to handle the bad weather conditions very effectively.
The boat was jumping on plane in 5 seconds, standing on plane at 2400 rpm maintaining a speed of 11 knots, while accelerating to 30 knots in 6 seconds and reaching 40 knots in 9 seconds. The above figures are particularly wonderful, allowing us to travel on plane at low speed when the weather conditions are very bad, thus increasing the quality of the cruise and our autonomy.
At 3000 rpm, we were traveling at 18 knots burning 1.77 liters per nautical mile, while at 3500 rpm we were running at 24 knots recording the most economical cruising speed with a consumption of 1.66 liters per mile.
At 4000 rpm we were cruising at 29 knots with a fuel consumption of 1.72 liters per mile, while at 4500 rpm, we were running at 33.5 knots burning 2.3 liters per mile.
At full throttle, Mazziena 26SP recorded a top speed of 48 knots, while the engine reached 6200 rpm, approaching very close to the maximum rpm limit recommended by Mercury.
You can see our measurements in the table below:
However, a closer look at the table of measurements, in combination with the feeling we got, clearly show us that this particular boat-engine-propeller combination needs significant interventions, mainly related to the choice of a different propeller and perhaps to the height position of the engine.
The lag was evident up to 4000 rpm, as shown by the particularly high slip values we recorded in that range.
Taking a good look at the numbers in the measurement table, we will see the very good slip values that we recorded, which show that we had a very good set-up in our hands and the boat performs better with large propellers.
If we want to create the ideal set-up, all we have to do is to apply a shorter propeller by one inch, so as to allow the engine to be close to its maximum rpm limit even when the boat carries her usual loads.
In this case, it is possible that consumption will be slightly increased and our autonomy will be decreased accordingly, but we will have in our hands an even more explosive boat, maximize the ride quality in every condition, while our engine will work more correctly and smoothly.
Manufacturer:
Mazziena-ribs
Loutraki, 20300 Karpounari
Τel. 2744062703 / 6937282013
info@mazziena-ribs.com
