Quote: (Originally Posted by
AD_ward9)

It was used for the dives on the Brittanic. That is in a very much busier shipping lane than the Doria.
Also, a boat anchored into the Doria in the fog is a hazard in itself: remember how the Doria sank!
Alex
Last time I checked the Doria sank as the result of 2 vessels under way, making way in the same shipping lane going toward each other. This is pretty much the same as what you are suggesting with your drifting Deco scenario. Anchored on the Doria makes the dive boat a fixed non moving radar target
anchored out of the shipping lane. I am at a loss to understand why you would choose to play "chicken" with 600' freighters traveling at 20+ knots as opposed to staying out of their way.
Ted