Jerrard
New Member
I was wondering if anyone has used the Raysand this year?
Yes, why do you ask? I'm a frequent user.I was wondering if anyone has used the Raysand this year?
Hi, I asked because I'd like to use that route and would appreciate any inout/advice from someone's who has used it recently. for instance - should one expect the depths in line with the range for Burnham on Crouch? Did you follow the 2 raysand buoy markers? I guess I'm looking for helpful comments which is why I made the enquiry. As you are a frequent user then you're just the person! Thank you for any help.
I have a confession to make. I have sailed these waters since 1972 and never done the Raysand, so I am in no position to answer this interesting question. More importantly, who has done it and survived to tell the tale?
The post above from Tillergirl leads you to his excellent and accurate chart http://www.crossingthethamesestuary.com/Ray Sand 2020 Upload.pdf . Suggest you use tidal data based on Sheerness and then check for negative surge on the day from the PLA tide gauges Hydrographics . As you will see from Tillergirl's chart, best water is not where the buoys are. I just follow the 1 degree longitude line and that gives about 0.5m more depth than the buoyed line. I usually cross about 2.5 hours before HW (1.4m draft) which enables me to carry the flood up whichever river I am heading for. If heading south to the Crouch , and well before HW, do not let the flood tide into the Crouch sweep you Westwards off the 1 degree line before you reach the deeper water, the bottom is hard sand!Hi, I asked because I'd like to use that route and would appreciate any inout/advice from someone's who has used it recently. for instance - should one expect the depths in line with the range for Burnham on Crouch? Did you follow the 2 raysand buoy markers? I guess I'm looking for helpful comments which is why I made the enquiry. As you are a frequent user then you're just the person! Thank you for any help.
Both. The 2.5 hours before HW and 1.4m draft refers to Plum.Colin, have you done this on Plum (with it's deep draft) or your motorboat?
Thank you for your good information - very helpful.The post above from Tillergirl leads you to his excellent and accurate chart http://www.crossingthethamesestuary.com/Ray Sand 2020 Upload.pdf . Suggest you use tidal data based on Sheerness and then check for negative surge on the day from the PLA tide gauges Hydrographics . As you will see from Tillergirl's chart, best water is not where the buoys are. I just follow the 1 degree longitude line and that gives about 0.5m more depth than the buoyed line. I usually cross about 2.5 hours before HW (1.4m draft) which enables me to carry the flood up whichever river I am heading for. If heading south to the Crouch , and well before HW, do not let the flood tide into the Crouch sweep you Westwards off the 1 degree line before you reach the deeper water, the bottom is hard sand!
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Yes, certainly "a realistic proposition "Tillergirl and I have corresponded previously about the wisdom, or otherwise, of crossing the Rays’n in a 1.8 fin keeler but this thread has sparked my interest afresh. Looking at Tillergirl’s 2019 chartlet, and fully aware that depths may have changed, I see a maximum drying height of 1.6m on the 01 degree line. Assuming Whitaker Beacon is the best tide table to use, the tidal height at HW-1 today is 4.5m and 4.8m at HW. The crossing at 01 degrees due south between the 2m contour lines is approx 1.4 miles so say 20 minutes at 4 plus knots, or a bit longer if you were to cross slower just in case. Does that not suggest that in benign conditions without a ‘negative surge’ or lower tide caused by wind or high pressure, a depth of 2.9m with a rise of another 0.3m at high water would make this a realistic proposition with due care? I stand by to be contradicted!
Regards
David
IMG_0200 by Roger Gaspar, on Flickr