on line tidal stream info

[snowleopard]

Does anyone know of on-line tidal stream info? I know loads of sites that give times of HW but can't find anything on flows.

 

[shmoo]

I have really looked hard for this and not found it.

I have written some passage planning software (like Neptune but better; not hard, I know...) and at present I have to hand type tidal diamond details from charts into XML files for it to work.

Of course, I could let you have a load of XML tidal diamond files for East and South coast if it were not for copyright and liability issues...

 

[Sans Bateau]

Take a look at Admiralty Total Tide software.

 

[MoodySabre]

You used to get it on MyAlmanac but it disappeared when taken over by Reeds.

 

[kingfisher]

NL tides of the Dutch hydrographical office. The demo with the 2006 tides is free. All you then have to do is find a dat with exactly the same high water as this year. A bit like reusing a calender.

Is there actually a frequency in tides? Is the tidal data from 1948 the same as 2008, let's say?

 

[Steve Clayton]

Which area(s) do you want? I can point you at the Solent/Isle of Wight tidal flows on-line.

 

[snowleopard]

Just looking to check my calculations for a passage along the Devon coast this week.

 

[JohnP]

South Devon tides run up Channel towards Lyme Bay roughly 3 hours either side of high water Devonport. I leave Salcombe around 3 hours after high water Devonport to go westwards. Works reasonably well between Looe and Dartmouth.

 

[snowleopard]

Thanks for that, it agrees roughly with my calculatios - I have an old Reeds with tide charts based on Dover plus this year's Plymouth tables. Too many steps in the calculations for total confidence. (That's at home BTW, the up to date stuff is on board!)

 

[Cornishman]

Have a look at this Adobe Reader needed

 

[LadyInBed]

If it is just a quick ref you want
See here and here

 

[snowleopard]

That certainly helps. It cuts out the approximation of tidal diff Dover/Plymouth. It backs up JohnP's rule of thumb.