Many of the sailing directions and his findings are still apparent on present day charts.
These lost but much-cited sailing directions go back at least until the twelfth century.
"What are the sailing directions for the Rufiji mouth?"
The Sailing Directions speak of them as hostile and treacherous.
A rutter is a mariner's handbook of written sailing directions.
He, in turn, was haunted by one thought of action, a sailing direction for the Horn: Whatever you do, make westing!
Taken from some old sailing directions from the Seventies.
He knew the eastern Mediterranean very well and used this knowledge to write a sailing directions of the entire Mediterranean.
Portolan handbooks expressed their sailing directions in terms compass rose points and distances.
The sailing directions in the harbour are "to avoid Adam and hug Eve".