Some older posts in this forum refer to transfering maps via WiFi. This method is no longer available. The method described here using iTunes file sharing is much easier and more reliable.
Any maps that you use with the Memory-Map desktop mapping products can be used on your iPhone. This includes Memory-Map map packages, or any third party maps that are compatible with the desktop product. For example BSB charts, or eTopo maps can be used. In some cases you may have to purchase an additional license for the iphone.
You can also scan a paper map (with the permission of the copyright holder), calibrate it using the Memory-Map desktop app, and use the result for navigation on your iPhone. The map files (with QCT, QC3, MMI extensions) can be loaded directly off your original Memory-Map DVDs. Alternatively, they may be found in the folder C:\Maps or C:\Maps_V5 on your PC hard drive.
You can also send sections of a map file. (Draw a route around the area you want in Memory-Map on your PC, right-click on the route > Operations > Enclosed Area > Send to Mobile Devices, Name the map and select 'Storage card on PC' and save to a memorable location on your hard drive or desktop.)
To copy the maps to your phone, sync it with iTunes using the USB cable. In iTunes, select the device, and click the Apps tab. At the bottom is a section that shows all the apps that support file sharing. Select Memory-Map. You can now drag-n-drop files and folders into the list on the right.
Back on the iOS device, tap the maps folder > More Maps > All Maps on Device, and Map Types -> Show All.