GB/T 17838-2017Specification for the ships' auxiliary marine hydrology and metereological observations (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This standard supersedes GB/T 17838-1999 "Standard Specification for Maritime Hydro-meteorological Auxiliary Measurement of Ships". This standard and GB/T 17838-1999 compared, the main technical changes except editorial changes are as follows.

--- Added "Introduction";

--- Deleted "normative references" (see Chapter 2 of the 1999 edition);

--- Added "terms and definitions" (see Chapter 2);

--- Modified "General Provisions" (see 3.1, 3.2, 3.3 and 3.4, the first edition of the 1999 edition);

--- Added "ship automatic measuring instrument" (see 3.5);

--- Revised "Observation Elements and Accuracy" (see 4.1, 5.1, 6.1, 7.1, 8.1, 10.1, and 11.1, Chapter 24 of the 1999 Edition, 20th Edition) Chapters, 17.2, chapters 11, 8 and 31 and 28.2);

--- Added "automatic observation method" for observation items (see 4.2, 5.2, 6.2, 8.2, 11.2 and 13.2);

--- Revised the "artificial observation method" of the observation item (see 4.3, 5.3, 6.3, 7.2, 8.3, 9.1, 10.2, 11.3, 13.3 and 14.1, Chapters 26, 22, 18.3, 12 Chapters, 9 Chapters, 15 Chapters, 32 Chapters, 29 Chapters, 35 Chapters of the 1999 Edition and 38.1);

--- Added the "Height Correction Chart of Sea Level Pressure" (see Table 2);

--- Revised "wind rating table" (see Table 3, Table 4 of the 1999 edition);

--- Revised "Cloud Table" (see Table 4, Table 2 of 1999 Edition);

--- Added "Ocean Ice Observation" (see Chapter 12);

--- Deleted the "seawater salinity calculation formula" (see 33.1 in 1999 edition);

--- Deleted "Observation of vertical seawater temperature" (see the 12th edition of the 1999 edition);

--- Modified the "report code" code symbol requirements (see Chapter 15, 1999 Edition 13);

--- Revised "Data Processing and Quality Control" (see Chapter 16, 1999 Edition, Chapter 14);

--- Revised the "Ship Marine Hydro-meteorological Assisted Forecasting Record Form" (see Appendix A, 1999 Edition, Appendix A);

--- Added "sensor interface and protocol" (see Appendix B);

--- Revised the "Non-real-time electronic data file record format and description" (see Appendix E, 1999 Edition, Chapter 47, Chapter 48);

--- Added "References".

Introduction

This revision will adjust some observation items and increase sea ice observation projects to meet social and economic development and national early warning of disaster prevention and reduction requirements; increase the number of automatic observation projects and appropriately increase the specific indicators of each observation element to meet the current level of observation technology and the number of high quality according to the needs; increase the technical specifications of the new observation sensors and other equipment and installation requirements.

1 Scope

This standard specifies the observing items, technical requirements, and observation methods for marine hydro-meteorological aids and forecasting (hereinafter referred to as ship monitoring), report code and data processing.

This standard applies to merchant ships, fishing boats and other ships engaged in maritime activities for marine hydro-meteorological observations and data transmission.

2 Terms and definitions

The following terms and definitions apply to this document.