Eye4Software Hydromagic

Professional hydrographic survey software


Download free demo


Winkel I Projection

The first projection published by O.Winkel in 1921 is a generalization of Eckert's V using the equidistant cylindrical projection with any two opposite parallels standard, not necessarily the Equator (therefore only the horizontal scale is changed from the special case). Winkel preferred 50°27"35' N and S, which makes the total area proportional to the equatorial circumference.

Winkel I Projection
Winkel I Projection


Required Parameters

To convert coordinates using the Winkel I projection, the following parameters have to be set: