This question is too big to answer. It's easy to read a map, but navigating safely by it requires skill and the knowledge of several tricks and trades, so I suggest taking a course.
http://en.wikipedia.org/wiki/Nautical_chart
Nautical chart
it is a chart of locations and channels.
Such a map is commonly known as a nautical chart.
A nautical chart of a harbour is a detailed plan of a area with all navigation features applied including buoy-age systems,water depth,nature of seabed,light characteristics and scale of distance. You can find out all the information of that harbour when learning to read a chart, they are very helpful for the sailing/merchant enthusiast.
For the times of nautical and civil twilight you need to refer to a nautical almanac.
Marine Chart or Nautical Chart.
Remain tied to the dock until you are competent to handle the vessel.
On a nautical chart in a harbor, you will find information about the water. It will show water depths, any obstructions a boater may come across, and places where you might encounter bridges. When planning a boat trip, it is important to study the nautical chart carefully and plot your trip.
On a nautical chart in a harbor, you will find information about the water. It will show water depths, any obstructions a boater may come across, and places where you might encounter bridges. When planning a boat trip, it is important to study the nautical chart carefully and plot your trip.
On a nautical chart in a harbor, you will find information about the water. It will show water depths, any obstructions a boater may come across, and places where you might encounter bridges. When planning a boat trip, it is important to study the nautical chart carefully and plot your trip.
Channel locations
Channel locations