Join Date: Feb 2011
Location: San Francisco Bay area
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I know they are charted. I provided the chart in my OP!
Funny you should mention sleep. The Pilot of the Cosco Busan suffered Sleep Apnia (sp?), and was on medication that wouldn't allow him to drive a car, much less a cargo ship (did prison time). Given human nature*, it seems prudent to eliminate submerged hazards, or at least mark them with nav aids when you can. It is certainly the "responsibility" of the Skipper to avoid them, however, the environment, wildlife and passengers pay the price when he is a bonehead! A surprising number, in command of huge ships have proved to be just that!
*In the Case of the Busan, The Pilot, Skipper, Vessel Control, Caltrans and the Coast Guard were all found at fault!
Here's the report on the accident.
Essentially the pilot steered towards two marks on the chart which he thought marked the centre of the channel. In fact they marked the bridge tower.
Bristol 31.1, San Francisco Bay