I know exactly what you mean. Due to personal time commitments, we were coming through Colvos Passage against the tide yesterday. I was running an extra 500 rpms higher than normal and still only going 9.2 mph. I counted 27 boats headed North through the passage when we were one of three boats headed Southbound. Sailboats under power were flying going Northbound. How often do you see that? ;) Good feedback on the tables. I just bought a Garmin 4210 for the lower helm. I will have to do some looking and see how accurate the electronic current and tide tables are on the new chartplotter.
Kerry -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Rocco Sent: Tuesday, May 26, 2009 6:55 AM To: UnifliteWorld Subject: [UnifliteWorld] Tides and Currents Those of you who are here in the Pacific NW know well how important it is to have correct tide and current information. This past weekend was an excellent example. We went cruising in South Sound - a great place to cruise! - and went with the current both going and coming. We rode a +6KT flood current through Tacoma Narrows! Sturdy Girl normally cruises at 11.5 KTS at 2900 RPMs. On Saturday she was flying at plus +18KTS and on Monday at +17KTS. That's a whole lotta fuel saved! Of course my wife wants to know why we didn't just run at lower RPMs and save even more fuel... Here's the real point, however. We have a Raychart C120 with Navionics charts we used for navigation. Navionics has built-in tides and current tables. DON'T trust them! I had heard the computer programs for secondary stations are inaccurate because of how they are calculated but, we found the same for Tacoma Narrows which is a PRIMARY station. Fortunately, I buy annual editions of Ports & Passes, which is a terrific resource, and use it for planning a trip. In the case of Sunday's run, the Navionics data erred by THREE hours. Had I depended on my computer program for current data, we could have been bucking the tide instead of using it to our advantage. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "UnifliteWorld" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/UnifliteWorld?hl=en -~----------~----~----~----~------~----~------~--~---
