tag:blogger.com,1999:blog-8849386655963437560.post3902791445914258215..comments2024-03-21T09:11:16.537-04:00Comments on Cruising the ICW with Bob423: Chesapeake City - at anchor, steady rain all day longBob423http://www.blogger.com/profile/09269810283567498286noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-8849386655963437560.post-4886556268614559472016-05-23T23:10:22.002-04:002016-05-23T23:10:22.002-04:00Whit, l made an attempt to explain it better in to...Whit, l made an attempt to explain it better in today's blog. Please critique it, thanks.Bob423https://www.blogger.com/profile/09269810283567498286noreply@blogger.comtag:blogger.com,1999:blog-8849386655963437560.post-34989229233473512892016-05-23T08:14:36.138-04:002016-05-23T08:14:36.138-04:00Bob,
I understand everything you are saying exc...Bob,<br /> I understand everything you are saying except where you get the 58'. Charts show this bridge at 55' - which is 55' at MHW. The waterlevels you references in your link I think show a MHW at the 5' above MLW. I'm thinking that that should make bridge height at 60' above MLW. Then you have to start subtracting for what the tide is doing that particular day as well as when you are arriving in that tidal period. Am I missing something? I want to do just like you did and go through the canal coming down the Delaware so trying to check at Utsch's before hand is not an option. When you went through did you happen to look back at the tide board - the one you would see if doing the East to West passage - was it accurate?Anonymoushttps://www.blogger.com/profile/00001204496723162406noreply@blogger.comtag:blogger.com,1999:blog-8849386655963437560.post-43858360454424804932016-05-22T20:26:20.932-04:002016-05-22T20:26:20.932-04:00Whit, my mast is 55 ft 3 in. We've been throug...Whit, my mast is 55 ft 3 in. We've been through the canal a dozen times. There are now height boards in place so there's actually no risk. My rule of thumb is to make the passage with no more than a 1 ft tide which is plenty of leeway. A 0.0 tide will give you a 58 ft bridge height if the water level meets the predicted level. That information can be found at <br />http://tidesandcurrents.noaa.gov/waterlevels.html?id=8536110<br />For some reason, the display of the data is much better on an iPad. <br /><br />For example, today due to the recent heavy rains, the water level was 1 ft above normal. I went through with a 0.5 tide. So 58 ft minus 0.5 minus 1 ft left me with 56.5 feet of clearance. I confidently went through. <br /><br />I was going through one year when the boat behind me called on the VHF and excitedly told me to stop! I was going to hit and he was trying to be helpful. Since that was my fourth trip at the time, I ignored the warning and continued without harm. When you approach the bridge it will seem from your ground view that you will surely hit and even that the mast seems to "melt through" the bridge (how did it miss hitting?) Have faith, the height boards are right. In fact, if you avoid the little light handing down from the bridge you'll pick up another foot.<br /><br />For the ultimate in confidence, take a dock at Utsch's Marina and walk over to the bank by the first bridge. From there you can see the height board and compare the expected height against your calculations (second paragraph). Bob423https://www.blogger.com/profile/09269810283567498286noreply@blogger.comtag:blogger.com,1999:blog-8849386655963437560.post-23883183151916685282016-05-22T18:04:38.199-04:002016-05-22T18:04:38.199-04:00Bob - what is the height of your mast? Critical i...Bob - what is the height of your mast? Critical info for me - we are 54' and I don't think we can chance going through the Cape May canal. But you do it - what is your height?<br />Thanks - Anonymoushttps://www.blogger.com/profile/00001204496723162406noreply@blogger.com