Alex F
Well-Known Member
- Nov 14, 2006
- 9,166
- Boat Info
- 2005 420DB with AB 11 DLX Tender, Raymarine Electronics (2x12" MFDs) with Vesper AIS
- Engines
- Cummins 450Cs, 9KW Onan Generator, 40HP Yamaha for tender.
From my log (from 2010):
Performance test run (South wind ~10+mph, 1-2' chops): Full fuel, full water, Port=427hrs, Strbd=423hrs, WOT=34.7MPH, Port=4900RPM, Strbd=4800RPM burning 21GPH on each engine.
I'd say that 4600RPMS is a bit too low. Most likely your bottom and/or running gear needs to be cleaned.
Performance test run (South wind ~10+mph, 1-2' chops): Full fuel, full water, Port=427hrs, Strbd=423hrs, WOT=34.7MPH, Port=4900RPM, Strbd=4800RPM burning 21GPH on each engine.
I'd say that 4600RPMS is a bit too low. Most likely your bottom and/or running gear needs to be cleaned.