Gentlemen Your comparing apples & oranges.  A 37 Nordic with a CUMMINS 5.9L will use much less fuel than a Nordic 42 with its larger block & HP. Plus the Nordic 42 weight is 1/3 higher than a 37. Plus there is a Huge Fuel curb when increasing speeds from 8-9-10GPH. Good Luck Ben Wilde On Friday, November 30, 2018 David Bell <pgisailor@gmail.com> wrote: That last sentence is getting kind of personal. 😂😂😂 On Nov 30, 2018, at 8:08 AM, Richard Tudan <tudan@verizon.net> wrote: Sounds like a prop pitch problem. Especially your fuel consumption number. We get 1.75 gal/hour (average over 400 hrs) at 1600, 8.5 knots on  a 330 hp Cummins. I don't think you should be burning more than 2.5. Your lower max rpm is also a good indicator. I am assuming you have a clean bottom.Dick TudanLast Tango NT37-73 Sent from my iPad On Nov 29, 2018, at 11:49 AM, BEN WILDE via Sentoa <sentoa@lists.sentoa.org> wrote: Hi Craig Speed & RPM's do appear low. But not certain which engine you gave. Was thinking they should have 2600. Tell me some more info & we can assist. Happy Boating Ben Wilde On Thursday, November 29, 2018 Craig FILLMANN via Sentoa <sentoa@lists.sentoa.org> wrote: Good information from the digest... one of the benefits of owning a tug... Bought the 2004 - 42 with a 450 cummins, 1000hrs... have top speed of 11 knots at 2400rpm,  Most of the time cruising at 8 - 10kts,  east coast intracoastal and some offshore.. speed is through the water with a paddle wheel sensor, consider accurate when comparing with gps / current/ wind... Used 5 1/4 gph over 200 hours...  Most of the literature that I see show a top speed higher...  any thoughts? Craig FillmannFog Dog  nordic tug 42 - 57_______________________________________________ Sentoa mailing list Sentoa@lists.sentoa.org http://lists.sentoa.org/mailman/listinfo/sentoa_lists.sentoa.org _______________________________________________ Sentoa mailing list Sentoa@lists.sentoa.org http://lists.sentoa.org/mailman/listinfo/sentoa_lists.sentoa.org

Your comparing? You meant* you're* comparing? On Fri, Nov 30, 2018 at 5:18 PM BEN WILDE via Sentoa < sentoa@lists.sentoa.org> wrote: > Gentlemen > Your comparing apples & oranges. A 37 Nordic with a CUMMINS 5.9L will use > much less fuel than a Nordic 42 with its larger block & HP. Plus the Nordic > 42 weight is 1/3 higher than a 37. > Plus there is a Huge Fuel curb when increasing speeds from 8-9-10GPH. > Good Luck > Ben Wilde > ------------------------------ > On Friday, November 30, 2018 David Bell <pgisailor@gmail.com> wrote: > That last sentence is getting kind of personal. > 😂😂😂 > > On Nov 30, 2018, at 8:08 AM, Richard Tudan <tudan@verizon.net> wrote: > > Sounds like a prop pitch problem. Especially your fuel consumption number. > We get 1.75 gal/hour (average over 400 hrs) at 1600, 8.5 knots on a 330 hp > Cummins. I don't think you should be burning more than 2.5. Your lower max > rpm is also a good indicator. I am assuming you have a clean bottom. > Dick Tudan > Last Tango NT37-73 > > Sent from my iPad > > On Nov 29, 2018, at 11:49 AM, BEN WILDE via Sentoa < > sentoa@lists.sentoa.org> wrote: > > Hi Craig > Speed & RPM's do appear low. But not certain which engine you gave. Was > thinking they should have 2600. > Tell me some more info & we can assist. > Happy Boating > Ben Wilde > > > ------------------------------ > On Thursday, November 29, 2018 Craig FILLMANN via Sentoa < > sentoa@lists.sentoa.org> wrote: > > Good information from the digest... one of the benefits of owning a tug... > > Bought the 2004 - 42 with a 450 cummins, 1000hrs... have top speed of 11 > knots at 2400rpm, > > Most of the time cruising at 8 - 10kts, east coast intracoastal and some > offshore.. speed is through the water with a paddle wheel sensor, consider > accurate when comparing with gps / current/ wind... > > Used 5 1/4 gph over 200 hours... > > Most of the literature that I see show a top speed higher... any thoughts? > > Craig Fillmann > Fog Dog > nordic tug 42 - 57 > _______________________________________________ > Sentoa mailing list > Sentoa@lists.sentoa.org > http://lists.sentoa.org/mailman/listinfo/sentoa_lists.sentoa.org > > _______________________________________________ > Sentoa mailing list > Sentoa@lists.sentoa.org > http://lists.sentoa.org/mailman/listinfo/sentoa_lists.sentoa.org > > _______________________________________________ > Sentoa mailing list > Sentoa@lists.sentoa.org > http://lists.sentoa.org/mailman/listinfo/sentoa_lists.sentoa.org >