Ferretti FAIR
Boat’s track during a trial showing RPM data
800
1,000
1,100
1,200
1,300 1,400 Cruise 3
1,600 1,700
1,800 1,900
2,000 

2,100 Cruise2
2,200 2,300
La Spezia Cruise 1
2,400
Max RPM
Full trim tab
Full trim tab
2/B//BD/@7=CAAB/53A
Any parameter (such as speed or trim) can be recorded
wave height might just be possible against trim angle and turn rate
with GPS, but Ferretti group quality against speed.
manager Giovanni Manni told European The logging and playback facility
Boatbuilder: “We judge sea state by allows the results of any particular
eye, which is fine, as with experienced test to be scrutinised at leisure back in
personnel the range of possible error the factory after the test is complete.
is irrelevant.” This in turn means actual and
With so much data to gather, one predicted performance can be directly
might imagine that such testing would compared and differences between the
be an extended process. But Manni two addressed.
is quick and eager to point out that it As the data library grows the
doesn’t have to be. gap between forecast and actual
“Because FAIR records around 50 performance will inevitably narrow.
measurements per second, and we As this occurs, FAIR will become
“Our whole philosophy is platform
development based around modern
propulsion systems”
record for one minute at 12 steps in the increasingly useful tool to the
engine rpm range, after 12 minutes the design team, giving them increased
test is complete. In the case of confidence that new boats will meet
high waves we make a run in each performance design criteria. Eventually,
direction. Before FAIR, it would take it may be possible to reliably predict
us about two hours. That, of course, is how any particular change will
for a simple, straight line speed test. affect performance purely through
Checking turning circles at various simulation.
speeds and rudder angles obviously Ferretti obviously considers the
takes a lot longer. cost of FAIR to be a worthwhile
An essential aspect of FAIR is its investment in the company’s quest
ability to display data in real-time, for constant improvement throughout
while at the same time recording it the group. Data gathering in an
for later playback. The former allows environment like the open sea, which
testers to observe boat behavior as can vary from minute to minute let
it happens and, if necessary, modify alone day to day, is undoubtedly a
the test procedure to investigate challenge. It will be interesting to see
particularly interesting performance whether such a high-tech approach
characteristics as they show up. Two to performance measurement pays
obvious examples would be speed dividends in the long-run.
www.europeanboatbuilder.net s August/September !#
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