Refer to the current Seattle sectional excerpt near Port Townsend, Washington. An area labeled "R-6701" is bounded by a hatched blue line. What kind of special-use airspace is this?

Why: The "R-" prefix identifies a restricted area, and sectional charts draw restricted (and prohibited and warning) areas with a hatched blue boundary line, distinct from the hatched maroon/red line used for MOAs and alert areas. Restricted areas contain hazards to non-participating aircraft, such as artillery firing or guided missile activity, and often require specific permission or routing around them.

• MOAs are identified by name (such as "Mt Dora West High and Low MOA"), not an "R-" number, and are drawn with a hatched maroon/red boundary, not blue.
• Alert areas are also drawn with the maroon/red hatching used for MOAs, and are identified by an "A-" designator (such as "A-260"), not "R-6701".