You've got WeatherMail!

WeatherOnline will send you daily E-Mails containing your personal shipping forecast covering the entire North Sea, the British and European Atlantic coasts, the Baltic and Mediterranean Seas.
Sign-up by entering and submitting your selected shipping area through the dialog field below. You will instantly receive a confirmation e-mail. To reconfirm your registration simply click on the link in this e-mail.
Now you're signed up. You will be able to cancel your registration at any time. Cancelling directions are enclosed in every e-mail we will send to you.
Your e-mail address will be only stored for our SailMail service.
>> iPhone Sailing