Before using a new edition of chart, mariners should do as follows except ______.A. Know how it was publishedB. Read all the chart's notesC. Verify its announcement in the Notice to Mariners and correct it with all applicable correctionsD. Be fully aware of the meanings of symbols or units in which depths are given

本题考查海图使用前的准备工作，核心在于识别非必要操作。关键点在于理解海图的实际使用需求：

1. 核对航海通告并修正（C）是确保海图信息最新的必要步骤；
2. 阅读海图注记（B）能避免遗漏关键信息；
3. 理解符号与深度单位（D）是基础操作要求。
   而了解出版方式（A）与实际使用无关，属于干扰项。

选项分析

A. Know how it was published

• 出版方式（如出版社、发行时间）与海图的实际使用无关，船员无需关注。

B. Read all the chart's notes

• 海图注记包含重要信息（如比例尺、坐标系统、图示说明），必须阅读以避免误用。

C. Verify its announcement in the Notice to Mariners and correct it with all applicable corrections

• 海图需通过《航海通告》核对最新修正信息，确保数据准确，是关键步骤。

D. Be fully aware of the meanings of symbols or units in which depths are given

• 深度单位（如米/英寻）和符号是基础操作依据，必须掌握。

综上，A项不符合实际需求。