Distances Between Ports

Reciprocal distances between two ports may differ due to the different routes of currents and climatic conditions chosen.

To reduce the number of listings needed, junction points along major routes are used to consolidate routes converging from different directions.

The distances are between positions shown for each port and are generally over routes that afford the safest passage.

In other cases, increased distances result from routes selected to avoid ice or other dangers to navigation, or to follow required separation schemes.

The text of this article originated from section 414 of The American Practical Navigator, a document produced by the government of the United States of America.