Previous chapters considered point targets so physically small that only single pairs of direct and indirect rays exist, giving definite multipath structures within the interference region. Point targets also usually have well-defined and broad (often omnidirectional) spatial target pattern maps (TPM) or radiation patterns, so their RCS does not vary much as they tilt. Although sea-waves may modulate their multipath factor, received signal is reasonably steady. In this chapter we consider how multipath affects vertically extended targets, such as ships and coastlines, whose structure extends over a wide height bracket. Atmospheric and precipitation attenuations do not affect the arguments deployed in this chapter and will be ignored.