What characterizes a rhumb line?

A rhumb line, also known as a loxodrome, is characterized by being a line of constant compass direction. This means that when traveling along a rhumb line, the navigator maintains a consistent bearing relative to true north or magnetic north, resulting in a straightforward course that can be followed without constant adjustments. This characteristic allows for simpler navigation over long distances, as the heading remains constant, making it easier to plot a course on traditional navigation charts.

Maintaining a constant compass direction is particularly important in marine navigation, as it enables sailors to steer a steady course while accounting for factors such as wind and current, which may necessitate adjustments elsewhere. The rhumb line is particularly useful for navigation because it simplifies the calculations involved in staying on course over variable terrain or oceanic routes.