When can a Navigation Rule be overlooked? In calm waters and clear weather In good visibility during the day When operating less than 50-feet off shore If necessary to avoid immediate danger

## Step 1<br />The problem is asking when a Navigation Rule can be overlooked. The options provided are:<br />- In calm waters and clear weather<br />- In good visibility during the day<br />- When operating less than 50-feet off shore<br />- If necessary to avoid immediate danger<br /><br />## Step 2<br />The first three options (A, B, and C) are specific conditions that may not necessarily require the overlook of navigation rules. They are more about the circumstances under which the rules are applied, not when they can be disregarded.<br /><br />## Step 3<br />The last option (D), "If necessary to avoid immediate danger", is the only one that provides a reason for potentially overlooking a navigation rule. This is because in situations where immediate danger is present, the safety of the vessel and its occupants may take precedence over strict adherence to navigation rules.