Analysis of information sources in references of the Wikipedia article "Sinking of MV Conception" in English language version.
The owner, charterer, master, or managing operator of a vessel carrying overnight passengers shall have a suitable number of watchmen patrol throughout the vessel during the nighttime, whether or not the vessel is underway, to guard against, and give alarm in case of, a fire, man overboard, or other dangerous situation.
Over the next 10 days, more than 80 divers from six different agencies would be dispatched to the Conception wreck—including about 25 SLO and Santa Barbara county locals like Smith.