Viz, in its shortest form, is often shorthand for “visibility.” In maritime contexts, visibility can refer to:

Navigational Visibility: This is the measure of the distance at which objects can be clearly discerned on the water by a vessel’s crew. Good visibility is crucial for safe navigation, especially in busy or congested waterways. Poor visibility conditions, such as fog, heavy rain, or darkness, can significantly increase the risk of accidents at sea.
Visibility in Reporting and Communication: In broader operational contexts, “viz” might also refer to the clarity or availability of information. For example, in logistics and planning within the maritime industry, having good “viz” means having a clear, unobstructed understanding of operations, vessel positions, cargo statuses, and other critical data.
These terms are integral to the maritime industry, influencing everything from the design and operation of ships to the safety and efficiency of waterborne transportation.

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