Moon/Sun rise/set times and effect on tides.

Post by **Just Fish** » April 17th, 2007, 3:45 pm

Maybe this is a dumb question but here goes....

Is there a calculation I can use to determine tides based on Sun/Moon rise and set? I know that is a weird question as it's very easy to look up the tide info but here is why I ask...

I am comparing the Garmin 76cx and Lowrance H20c and notice that the Garmin has tide charts on it but the Lowrance only has Sun/Moon rise/set. So I am wondering if I can semi-acurately calculate the tides based on the Sun/Moon rise set info.

Thanks

Post by **Tom Keels** » April 17th, 2007, 3:48 pm

Short answer no. You can "predict" tides based on date/time, but the math hurts my head.

My advice, go with the garmin.

Post by **Just Fish** » April 17th, 2007, 5:15 pm

Thanks for the info Tom, I just have to decide if its worth the extra $150 just for some automatic tide charts that I can easily look up the night prior to the trip.

Post by **Dubble Trubble** » April 17th, 2007, 5:29 pm

Why not just buy the nauticpath chip for under 100 bux. I got one and it has the tides on it. From the Lowrance site, it is compatible with the H2OC.

Dubble

Post by **Jumptrout51** » April 17th, 2007, 8:50 pm

Go with GARMIN,tides are always there,plus it shows you how much the tide is rising or falling on the graph. You get the sun/moon stuff as a bonus.

Post by **Just Fish** » April 19th, 2007, 7:46 am

Thanks Dubble, that's what I wanted to hear. I was planning on getting the nauticpath chip anyway. I didn't realize it included the tide charts. Thanks for the tip.