Shapes

In maritime context, shapes refer to the various signals used to communicate between vessels or between a vessel and shore. These signals are used to convey important information such as the vessel's position, course, and intention. Shapes can be displayed during the day or at night and include signals such as balls, cones, cylinders, and diamonds. For example, a vessel displaying a ball over a diamond shape indicates that it is a vessel engaged in dredging or underwater operations and other vessels should keep clear. Shapes are an important part of maritime communication and are used to ensure the safety of vessels and their crews.
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