312 IAC 5-4-6 Buoys used as navigation aids; geometric shapes and designations

Sec. 6. (a) Geometric shapes must be placed on the white portion of the body of a buoy. The geometric shapes must be colored international orange. The authorized geometric shapes and meanings associated with them are as follows: (1) A vertical, open-faced diamond shape means danger. This shape is illustrated as follows: (2) A vertical, open-faced diamond shape with a cross centered in the diamond designates a zone which is excluded from usage by a boat or from some other designated purpose. This shape is illustrated as follows: (3) A circular shape designates a zone where a boat may be operated only if the operation complies with certain restrictions. This shape is illustrated as follows: (4) A square or rectangular shape means information or directions are provided. This shape is illustrated as follows: (b) If a diamond or circular geometric shape associated with the meaning of the marker is included, the meaning must be centered on the sign. If a regulatory marker consists of a square or rectangular shaped sign displayed from a structure, the sign shall be white with an international orange border.