Abstract: This paper discusses the detection of ships and ship wakes, and proposes a scheme with a series of steps for combined detection.The extended fractal (EF) feature is a detection statistic, which can greatly enhance the detection probability.The experiments show that the EF features provide improved detections performance.The Radon transform is commonly used in algorithms for detecting linear features in imagery. The results demonstrate the ability of this approach to successfully detect the linear components of ship wakes visible in SAR imagery.