The full name of S-102 is the Bathymetric Surface Product Specification, also known as the S-102 Bathymetric Surface. It aims to standardize the representation of high-resolution seafloor terrain data.

S-102 provides a standardized format for storing and transmitting seafloor elevation data, supporting applications such as marine navigation, environmental monitoring, and marine engineering. These data are displayed in a regular grid structure, allowing precise depiction of seafloor topography, supporting safer and more accurate navigation.

• Tile storage type: S-102 data is typically stored in a grid format (*.h5), a type of coverage data that stores depth values. This format organizes seafloor elevation data into a regular two-dimensional grid, with each grid cell containing the depth value at that location. The data files follow a specific encoding structure to ensure compatibility with other marine data standards.
• Data content: S-102 data is a high-resolution digital model of seafloor topography. Its display effects are similar to a topographic map, where variations in seafloor height are represented through color gradients or contour lines.
• Relationship with S-100 standard: S-102 is primarily used to provide detailed seafloor bathymetric data to improve navigation accuracy in electronic chart display and information systems (ECDIS). It is an important component under the S-100 framework, used in conjunction with other standards (such as S-101 electronic chart) to enhance the overall functionality and accuracy of navigation systems.
• Relationship with S-101: S-101 is a maritime chart data standard, primarily used to describe various information required for marine navigation, including depth data. In S-101, depth data typically exists as point data, providing basic information for navigation safety. In contrast to S-101's focus on navigation safety information, S-102 provides more detailed seafloor elevation data, showing finer seafloor topography. S-102 is mainly used to enhance the spatial accuracy and detail of maritime chart data and is an important supplement to S-101 data.

S-102 Bathymetric Surface Illustration

SuperMap iDesktopX supports the import and display of S-102 bathymetric surface data. In this chapter, you will learn about the following content:

• Import S-102 Data: Describes how to import *.h5 files that comply with the S-102 product specification.
• S-102 Data Display: Describes how to display maritime chart data by setting the depth mode. It also supports setting values for shallow water, deep water, and safety contour.
• Depth Query: Describes how to query depth values on the S-102 bathymetric surface.