Hi
Most widgets require internet access, so be sure to have WiFi in the port you are.
Internet via mobile phone (even UMTS) is expensive, especially if your in foreign seas (countries).
On the other hand widgets eat mmeory and use CPU power!
I know of these widgets and use some of these:
Buoy though of no use in Europe
http://www.cluebucket.com/widgets/
Tide Widget by the same author as Mr. Tides X
http://mac.softpedia.com/get/Dashboard-W...dget.shtml
or
iTide (not as good)
http://mac.softpedia.com/get/Dashboard-W...Tide.shtml
Moonphase
http://www.apple.com/downloads/dashboard...phase.html
weather satellite picture
http://www.apple.com/downloads/dashboard...otion.html
the dark and bright site of the earth for the long range sailor
http://www.apple.com/downloads/dashboard...earth.html
For those listening to short wave radio and want to know if there are a lot of sunspots disturbing the signals there
Sunspot
http://malte.sloede.com/download/sunspots/
Of course the original
weather widget, set up several instances of this widget and you do have have weather reports for several places
Astronomers should check,
Armillary the actual sky map:
http://www.apple.com/downloads/dashboard...llary.html
so not sailing related but funny,
jiWire for looking up wireless networks:
http://www.jiwire.com/osx-tiger-dashboard-widget.htm
And for those on longer journeys a
picture viewer for digital pictures of your beloved staying at home:
http://www.photojojo.com/content/tips/photo-widgets/
istat nano shows infos of your mac (great to observe temperature and CPU usage )
http://www.apple.com/downloads/dashboard...tnano.html
And many
weather and astronomical related widgets can be found here:
http://www.apple.com/downloads/dashboard/information/
though many are regionally related like Autralia, Netherlands, Germany etc.
I hope this helps!
Greetings
Manou