Fathomage, which refers to the measurement of depth in water, can be described with a variety of synonyms. For example, soundings refer to the measurements taken of water depth, while draught refers to the amount of water a ship needs to navigate safely. Additionally, feet, meters, or any other unit of length can be used to describe the distance from the surface of the water to the bottom. Other synonyms for fathomage might include sounding line or leadline, which are tools used to measure depth, as well as bathymetry, which refers to the study of underwater topography. Ultimately, the choice of word depends on the context and the specific measurement being taken.