How is the annual rate of change for magnetic variation shown on a pilot chart?()
我国海图作业规则规定,海图作业时,应在计划航线(推算航线)上标注()。
Ⅰ.计划(推算)航迹向;Ⅱ.罗航向;Ⅲ.罗经差;Ⅳ.风流压差;Ⅴ.船位差;Ⅵ.风流资料。
During the project, requirements change for a variety of reasons. As needs change and as work proceeds, additional requirements are derived and changes may have to be made to the existing requirements. It is essential to manage these additions and changes efficiently and effectively. To effectively analyze the impact of the changes, it is necessary that the source of each requirement is known and the rationale for any change is documented. The project manager may, however, want to track appropriate measures of requirements volatility to judge whether new or revised()are necessary.
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