R/datasets.r
coastlines.Rd
coastline lines at scales 1:110m (small), 1:50m (medium). 1:10m (large) are in the package rnaturalearthhires.
coastline110 coastline50
A SpatialLinesDataFrame
SpatialLinesDataFrame
http//www.naturalearthdata.com/download/110m/physical/ne_110m_coastline.zip
http//www.naturalearthdata.com/download/50m/physical/ne_50m_coastline.zip