Chart care
What kind of pencil should you use to write on a chart with?
#2 Pencil
What is the most common projection of a chart?
Mercator
What does the projection of the chart tell you? (in the title block)
What type of projection is used
What kind of eraser is best to use on a chart?
Vinyl or gum, non-abrasive
What parts of the earth does the Mercator distort the most?
North and south poles
What does scale tell you?
the relationship between distance on the map and distance on the ground
How should you store your charts?
Folded or rolled
What type of chart is the most durable?
Lithographic
What does a compass rose tell you?
what direction is north
Benefits of rolling your charts
What are the two types of charts you can buy?
Print on demand and lithographic
What is the depth measurement?
The unit of measurement for soundings and from which point they are taken.