ASA and PSIA Instructor
Join Date: Apr 2000
Thanked 37 Times in 37 Posts
Rep Power: 17
... I saw no mention that they even tried to call on 16 in the two articles I read. I'd be willing to bet that it's the journalists that messed this up, and the duck was actually calling on 16 however, since apparently other boats heard the calls, and I wouldn't expect so many to monitor 13.
FWIW Channel 13 is the designated ship-to-ship channel. You should be more likely to get a timely response from a commercial vessel on 13 than on 16, as 13 is "their" traffic. See U.S. VHF Channels - USCG Navigation Center
Certified...in several regards...