West Head is the easternmost point of the South Island. However, two other distinct headlands have very similar longitudes, sometimes leading to confusion and erroneous claims.
Cape Jackson, easternmost tip measured at 174.315°E (174°18'54"E), is about 100 metres further west.
Both West Head and Cape Jackson are at the end of long, narrow and difficult-to-reach peninsulas in the Marlborough Sounds. For this reason third-place Cape Campbell, LINZ longitude 174.2760°E, easternmost tip 174.2773°E (174°16'34") is sometimes mistakenly considered the easternmost point, but is about three kilometres further west.
Similar named geographic features
There are two other locations in the South Island named West Head: