Final answer:
When boats are crossing within 100 feet behind another vessel, they must drive at slow, no wake speed, unless the other vessel is a PWC (Personal Watercraft). This rule is important for boating safety and preventing accidents.
Step-by-step explanation:
When a vessel is crossing within 100 feet behind another vessel, they must drive at slow, no wake speed, unless the other vessel is also a PWC (Personal Watercraft). This applies to boating and navigation rules. The purpose of driving at slow, no wake speed is to prevent any potential collision or accident when vessels are in close proximity to each other.
For example, let's say there are two boats on a lake. Boat A is traveling ahead of Boat B. When Boat B wants to cross within 100 feet behind Boat A, it must reduce its speed and navigate at slow, no wake speed to ensure the safety of both vessels.
This rule is important to avoid any potential accidents or damage to vessels. It helps maintain order and safety on the water.