1. A computer-implemented method for processing real-time side scan sonar imagery from a side scan sonar, comprising: displaying change detection side scan sonar imagery during a change detection side scan sonar survey; and simultaneously displaying historical side scan sonar imagery in an area-based tile format from one or more previous side scan sonar surveys of the same geospatial location, the historical side scan sonar imagery that is displayed being geospatially co-registered with a current geospatial position of the side scan sonar, and the historical side scan sonar imagery having been converted from time-based data files into area-based tiles.