Tidal predictions for Dutch waters. http://www.getij.nl Dutch Ministerie van Verkeer en Waterstaat. From this site for any chosen port you can download a whole year of predictions in advance.
Tidal prediction software http://www.wxtide32.com Free tidal prediction program for Windows. Comes with no guarantees.
Charts Admiralty http://www.ukho.gov.uk Charts covering the whole world including the Small Craft series for sea areas around UK. Notices to Mariners http://www.ukho.gov.uk/amd/noticeToMariners.asp#NtM Chart updates
Imray http://www.imray.com Charts for selected areas convenient for yachtsmen. Imray also sells Stanford charts and is UK agent for Dutch and other foreign charts. Imray Corrections and Supplements http://www.imray.com/corrections.cfm
SHOM http://www.shom.fr/ French Defence Ministry charts. Navicarte http://www.navicarte.fr/fr/index.php French coastal charts.
Marina guides Marina Guide developed by EU http://www.marina-guide.eu Limited information on a selection of marinas in the Netherlands, Belgium, the French Channel ports and the UK.
Reeds marina database http://www.reedsonline.com/marina-guide.htm One of the better UK marina databases
Knots Dynamic demo of basic knots http://www.tollesburysc.co.uk/Knots/Knots_gallery.htm The best simple explanation we’ve come across. Bravo Tollesbury SC!