Monitor your boat while it's unattended. You can see your boat’s vital signs on your phone -- voltage, bilge pump counts, location, etc. -- and get a text alert when something goes wrong. You can also control things on your boat remotely, such as air conditioning, refrigerator, and lights. It's cheap, too.I got irritated the other day because I couldn't find any common, printable formats of the NOAA Nautical Charts. So I made some.These are .png files of the NOAA Nautical Charts, updated March 2014. (Hopefully I didn't miss any.) I think this is all of them, at full resolution.Let me know if you find any mistakes or have any questions:You can download the original charts from NOAA here:NOAA said they would eventually have .tif files available, which will make this page unnecessary. In the meantime, you can download any of these and print your own charts. The text is readable (barely) on a 13x19 page. If you print any smaller than that, you may want to use multi-page printing.Some of the charts have more than one file. For example, to get the complete chart 11306, you'll need both files that begin with 11306.The insets on a few of the charts are in separate files. If you want them on the same page for printing, you can merge them together using Photo Mud (Tools, Combine Photos, and select Multiply for the Combination Method.) You can also print multipage charts using Photo Mud.You can get Photo Mud here:You can find chart coverage and numbers on the NOAA interactive catalog NOAA has charts in .pdf booklet form you can download for printing here