Thanks Rick, That's what I need! Cautionary encouragement. I only studied a short while this afternoon on the route. I wanted to stay insight of all the markers going out. Then at the last one head east then south then west then back north to the mark back in I go. Its just a square loop. I will study the actual course more and more until I have a good understanding of the time with, wind, no wind, current, no current ect. To get a good trip out and back. But the way you calculated it I may be to adventurous. I really would like to be back to the dock in daylight so between 4: and 6:pm.
Thanks again, great help. Its so great to have you guys helping a new guy out. huge amount of resources. Great bunch of guys.. Curtis . On Mon, Jan 6, 2014 at 5:17 PM, Rick Brass <rickbr...@earthlink.net> wrote: > Curtis; > > > > First off, I’d suggest your local US Power Squadron chapter and see about > taking a basic “Piloting” course. It will teach you how to calculate tides > and currents from available information, and how to include these into your > course planning. There is a squadron in Beaufort > www.usps.org/localusps/beaufort and another in Hilton Head Home - Hilton > Head Sail & Power Squadron <http://www.hhsps.org/> both of which see > close to you. > > > > Second, you see to have your waypoints off a bit. You said turn east from > R4, to a new waypoint of 32 29.988N 80 29.988W. That waypoint is 28 NM from > the R4 marker at 010 degrees. I think you mean 34 05.988N 80 29.988W. Using > that new waypoint, I end up with a total cruise of about 56nm, which is > close to what you had intended. > > > > You indicated you would plan to do the trip sometime in March, so I used > tide and current data for March 1st and 2nd in evaluating the trip. > > > > High tide at the tide station under the bridge next to your marina is +8.2 > feet at 8:50AM on March 1st. You can expect the ebb to be near 0 kt > shortly after that, increase to a maximum of 1.4 kt for about 3 hours, and > then drop back to 0.2 kt near low tide. So for the first 20-21 NM out to > the R4 marker, your speed over ground should be about 6.5 kt, and your ETA > at the sea marker will be about 3 hours and 15 minutes after departure, > call it between noon and 12:15. > > > > Low tide at the station closest to the R4 mark (which is on Hilton Head) > is -1.58 feet at 2:46 PM. That gives you about 3 hours to complete the > triangular portion of your trip at sea, which is about 13-14 nm. You need > to average about 4.6 kt, which is about what I plan on averaging when > sailing. So that triangular loop looks doable, and should get you back to > the neighborhood of R4 around low tide. You shouldn’t notice much impact > from currents while this close to shore. > > > > Going back up the sound, the flood will start out at about -0.2 kt (that > is the base current near Hilton Head) and increase to a max of 1.2 kt > somewhere around 5:15 PM, then drop off to slack water near high tide, > which is 9:15 PM at your marina. Call it an average bump of about 1/3rdkt. So > going back up the sound you should be able to make about 5 kt > sailing, or a scosh under 6 kt motoring if you have a North wind. So if you > make the R4 mark around 3:00 PM, your ETA home is somewhere between 6:30 > and 7:30 PM. Sunset, for you, on March 1st is about 6:34 PM. > > > > Hope the trip works out well for you. > > > > Rick Brass > > Washington, NC > > > > > > > > *From:* CnC-List [mailto:cnc-list-boun...@cnc-list.com] *On Behalf Of * > Curtis > *Sent:* Monday, January 06, 2014 1:23 PM > *To:* CnC-List@cnc-list.com > *Subject:* Stus-List Near-shore tide what to expect. "Need some Guidance" > > > > So I'm as some of you know in the process of moving to the next step in my > training. I'm in the planing stages of my first over-night near shore > passage. I will leave early am: 4:00 with a full moon to help and head out > to the "R 4" F1 R4s @ 32-05,901"N 080-35,099W this is the channel into > Port Royal sound Beaufort SC. > > I intend to sail out with the tide its a 19 mile ride I figure 5.5 knots > of speed? That will put me there at Day break or just after 3.45 hrs. > > Then run straight east for 5nm to 32-029'899N 080-29'988 W That will take > a nother 90 min, > > Here, I will turn south to 32-03,997W 080-29'167W 1.92 miles = 34min > Here i will turn back west to 32-03'984W 080-34'965w this 4.92 leg take > .89 min > > Then I will turn North to will bring me the 4.92 nm back to to the "R 4" > F1 R4s @ 32-05,901"N 080-35,099W the bell marker at the mouth of the > channel. Then my hope will be to take the the Tide back in. > > So here is the question." If I do this near shore how much will the tide > effect my timing in the course: I plugged in the 5.5 based off motor speed. > > All together time from the dock and back to the dock. 10.956 hours to > cover 60.26nm > > How much time will the tide cost me off shore? I know a bought the tide in > and out of the river. Just need help with the offshore expectation? > > Thanks again. let me know if you need more information. > > LT > > > > > > > > > > > > > -- > “Sailors, with their built in sense of order, service and discipline, > should really be running the world.” - Nicholas Monsarrat > > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com > > -- “Sailors, with their built in sense of order, service and discipline, should really be running the world.” - Nicholas Monsarrat
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