Use ECW maps on iPhone - Bit Map

There is an iPhone app called Bit Map developed by a Tasmanian that allows you to export maps from OziExplorer for use on the iPhone.

Bit Map uses JPEG TIFF PNG and GIFF.

With a map loaded in Ozi you can export it as a .bmp file which can then be converted to one of the above formats (under File go down to Save Map to Image File). I converted the resulting .bmp file to JPEG with Photoshop.

Its quite a process, and apparently they are trying to simplify it. But for keen navigators with iPhones, the instructions are here.