When should the beam approach be avoided?

The beam approach should be avoided when stealth is required because this technique can create more noise and disrupt the concealment necessary for stealth operations. The beam approach, which involves positioning a vessel perpendicular to a target, often results in increased visibility and can attract unwanted attention. In scenarios where silence and discretion are crucial, using a more discreet approach is preferable to maintain the element of surprise and avoid detection. This is particularly important in tactical situations or when engaging in covert operations where being undetected is vital for success.

In comparison, the other options address different situational concerns such as traffic levels and navigating through narrow waterways, which may raise valid points but do not align as directly with the need for stealth.