Close to shore there's still local boat traffic. This fireboat may also want to be around to offer emergency aid if one of the racing boats has another catastrophe.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/39146306@N00">christieandsteve</a>
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/39146306@N00/9587256630/">San Francisco fireboat</a>