Eyewitness soundbite - Group of migrants rescued from sinking inflatable boat in the English Channel

The transcript describes a clear night where visibility is excellent, allowing for detailed observation of events. The Coast Guard is actively monitoring the area, making it difficult for anyone to escape unnoticed. The clear conditions would make it easier for someone to reach the shore safely.

Why was it considered an easy time for the individuals to come ashore?

What does the speaker imply about the conditions of the night?