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Go Back   SailNet Community > Skills and Seamanship > Seamanship & Navigation > Near-shore tide what to expect. "Need some Guidance"
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Thread: Near-shore tide what to expect. "Need some Guidance" Reply to Thread
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Topic Review (Newest First)
01-14-2014 08:26 PM
billyruffn
Re: Near-shore tide what to expect. "Need some Guidance"

LT,

You are obviously conscientious, detailed in your planning and precise in your calculations. Just remember the old saying about plans in war -- they never survive first contact with the enemy. Same is true in sailing. Pick a nice day and do it. Have a plan, but be prepared to change it as you go along. Enjoy the sail.
01-10-2014 05:49 AM
Camelia
Re: Near-shore tide what to expect. "Need some Guidance"

Quote:
Originally Posted by ltgoshen View Post
Near-shore tide what to expect. "Need some Guidance"
Do you have tidal diamonds on your charts, they will give you the direction and speed of the tide for every hour.
01-08-2014 01:37 PM
ottos
Re: Near-shore tide what to expect. "Need some Guidance"

If you want the NOAA info (which is probably what the DeepZoom app uses) try this

Tidal Current Predictions - NOAA Tides & Currents
01-07-2014 06:00 PM
jimrafford
Re: Near-shore tide what to expect. "Need some Guidance"

Hi Curtis
Unfortunately I'm not living there yet. Will be a couple more years before I can cut the chains in the northeast. At this point we go down in the spring and fall for vacation. I brought my 25' center console down for water access.
Jim
01-07-2014 12:22 PM
ltgoshen
Re: Near-shore tide what to expect. "Need some Guidance"

Quote:
Originally Posted by Sandlapper View Post
Go to the site "Deepzoom.com" that provides info on tides and currents. You can enter any date and run a time-lapsed animation that should provide a good idea of what you're up against. There is a current station all the way out to your "R8" which is 6-7 miles out from the inlet.

When you first load the site, it defaults to the Pacific NW. Just zoom out and back into your area of Port Royal Sound.

I just joined, so I can't paste links yet. Just Google the text below and select the first link.

deep zoom animated tides and currents
Wow. Thanks this is a great little app.
01-07-2014 11:24 AM
marianclaire
Re: Near-shore tide what to expect. "Need some Guidance"

Very nice. Just looked at Beaufort NC, an area I am more familiar with. Thanks.
Dan S/V Marian Claire
Edit: NOAA Charts with animated tides and currents.
01-07-2014 11:04 AM
Sandlapper
Re: Near-shore tide what to expect. "Need some Guidance"

Go to the site "Deepzoom.com" that provides info on tides and currents. You can enter any date and run a time-lapsed animation that should provide a good idea of what you're up against. There is a current station all the way out to your "R8" which is 6-7 miles out from the inlet.

When you first load the site, it defaults to the Pacific NW. Just zoom out and back into your area of Port Royal Sound.

I just joined, so I can't paste links yet. Just Google the text below and select the first link.

deep zoom animated tides and currents
01-07-2014 10:11 AM
ltgoshen
Re: Near-shore tide what to expect. "Need some Guidance"

Start of Route 32.391848 -80.677071 0
Waypoint 32.377352 -80.672951 0.9
Waypoint 32.36434 -80.677199 0.81
Waypoint 32.34324 -80.661364 1.5
Waypoint 32.315354 -80.650635 1.76
Waypoint 32.260826 -80.656857 3.29
Waypoint 32.169001 -80.592828 6.41
End of Route 32.097991 -80.584931 4.29

One way =18.96 nautical miles
Total Distance: 37.92 nautical miles
37.92 / 4.5 = 8.42 hours.
do-able yes?
01-07-2014 09:10 AM
ltgoshen
Re: Near-shore tide what to expect. "Need some Guidance"

Quote:
Originally Posted by jmallett View Post
You may also want to read the following article
www dot ritchienavigation dot com/docs/ESRitchieLR dot pdf

It illustrates well the problem with GPS units when your speed over the ground is low (resulting from sailing at a speed close to the speed of the current). A GPS unit determines direction from position measurements. The GPS also determines the direction of movement of the boat, not it's heading, so if the current is carrying you sideways then the difference becomes obvious.

Keep a good compass on board ($50 - $80 is quite enough), cross check your heading taken from the GPS against the compass from time to time, and plot your GPS position on the chart. Any difference between compass heading and GPS will show up.

Are you single handing ? Do you have some sort of self-steering gear rigged up ? There will be times when you need, want, to take a break from helming.
I have 3 GPs's and a binnacle compas.
I also have a auto-helm 4000 self steering that works from my GPS or from the the ST50 wind vane.
I will be single handed, however there will be a experienced sailor on board in case I need support.
01-07-2014 07:12 AM
Seaduction
Re: Near-shore tide what to expect. "Need some Guidance"

Maybe you could find a local shrimp boat captain at the dock and hitch a ride with him/her for a day and document the trip with your gps? Or just ask him about the tide generated currents around the inlet.
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