From the whales' point of view, if it is silent it would be great if every boat had it.

1. https://www.nhm.ac.uk/discover/news/2022/july/underwater-noi...

2. https://www.theguardian.com/environment/2022/apr/12/ocean-of...

3. Woods Hole, 2005: https://www.whoi.edu/oceanus/feature/how-to-see-what-whales-...