The magnetic compass suddenly enabled sailors to find an absolute direction anywhere on the globe without the complicated astronomical calculations required for celestial navigation.
(The magnetic compass; suddenly enabled; sailors; to find an absolute direction anywhere on the globe without the complicated astronomical calculations) (sailors; to find; an absolute direction; L:anywhere on the globe without the complicated astronomical calculations) (the complicated astronomical calculations; required; for celestial navigation)
The magnetic compass sailors the complicated astronomical calculations
suddenly enabled to find required
sailors to find an absolute direction anywhere on the globe without the complicated astronomical calculations
an absolute direction L:anywhere on the globe without the complicated astronomical calculations
for celestial navigation