Originally Posted by Lodesman
Narrow channel does not always imply there are draft
constraints. San Diego
is a good example, where a deep draft
might collide with a jetty or the aircraft carrier tied up to it, without running aground. Anyone driving a large ship doesn't need to be told that San Diego
is a narrow channel - it's self-evident. The port authority is advertising that fact to the small boat operators, in an attempt to have them not impede the large boats.
Making blanket statements like "In congested waters such as in harbors, large vessels constrained by their draft have the right of way over sailboats anyway." is misleading - it really depends on the harbor and whether or not narrow channel, tss, or special port rules apply.
I realize that.... I know the SF bay
intimately having operated a research
vessel here for 20 years now. The entire SF Bay
has effectively been declared a narrow channel by the port captain
. Even though there are areas of the Bay such as the area between Point Bonita and the Golden Gate Bridge where ships that do draw a significant amount of water
have some leeway to avoid a collision
. Other areas of the Bay such as the South Hampton Shoal channel have no leeway for a deep draft vessel to avoid a collision
. So what is the best decision for the port captain
to make? The best decision is for him to declare the entire bay narrow channel so that all vessels under 20 meters and all vessels under sail have to stay clear of larger deep draft vessels regardless of where they are from the Line of Demarcation from Point Bonita through Mile Rocks and east of that line.
It makes perfect sense for the port captain to do such a thing. Otherwise? ..you get yachties saying that the deep draft vessel, when the yachtie got in the way and the ship almost ran them down, were not in a restricted channel...and therefore they were not at fault because they were in waters deep enough water
for the ship to maneuver out of their way.
When ships get in the SF Bay and although they may be in deep water now, they are still very restricted in where they can turn to avoid a collision, especially if they are trying to make a narrow channel like the Oakland Bar Channel or make a mark which is marking the location of a submerged rock...such as Harding Rock or Blossom rock.
What is wrong with my logic or reasoning with the intent? I don't see it as misleading.