• US Coast Guard Navigation Center -http://www.navcen.uscg.gov
• Coast Guard Local Notice to Mariners - http://www.navcen.uscg.gov/?pageName=lnmDistrict&region=9
• Coast Guard US VHF Channels - http://www.navcen.uscg.gov/?pageName=mtVhf
• ​NOAA Charts - http://www.charts.noaa.gov/BookletChart/14500_BookletChart.pdf
• NOAA Weather - http://www.crh.noaa.gov/greatlakes/?l=lm​
• Towboat US - http://www.boatus.com/towing​