Historical Map and Chart Collection
From the Office of Coast Survey, includes NH Historical nautical charts.
National Ocean Service
Access to online nautical charts.
National Ocean Service Mapfinder
Direct link to nautical chart map finder.
New Hampshire Nautical Charts
From the Office of Coast Survey, allows you to search the interactive map for NH charts.
Sea-Tow Nautical Charts
Current nautical charts put online in cooperation with NOAA.