Chart No. 1 · E 20
Tower
Services & land
A tower pictogram marks any prominent tower — a reliable fixed object for visual bearings.
What it means
A tapering tower pictogram (abbreviated 'Tr') marks a structure high relative to its base — lookout, water (E 21), or ornamental towers. '(conspic)' flags the outstanding ones.
Why it matters
Any charted tower is a candidate for a compass bearing. Check the abbreviation — a water tower's tank shape looks very different from a lighthouse at distance.