JT/T 1585.1-2026Data exchange format for coastal port and fairway digital nautical products - Part 1: Water level data (English PDF)

JT/T 1585.1-2026 is the English-translated version of 沿海港口航道数字航海产品交换数据集格式 第1部分：水位数据.

JT/T 1585.1-2026 is Part 1 of the series on the data set exchange format for digital nautical products of coastal ports and fairways, and it deals with water level data. It applies to the production, exchange and application of water level data products for coastal port fairways, so that such data can be shared between producers and users in a common format.

The part is used by hydrographic and survey organizations, port and waterway authorities, developers of navigation and charting software, and shipping companies that use digital nautical products. It is a voluntary standard, as the /T in its code shows. It was approved by the Ministry of Transport, issued on 26 March 2026 and takes effect on 1 July 2026. It is a new standard.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 40 pages — is available in the English PDF.

JT/T 1585.2-2026

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