To get a better idea of the typical ranges for Rossby numbers in submarine channels, we have estimated \(Ro_r\) for a large number of channel bends in seven channel systems: Amazon, Zaire, Tanzania, Nile, Danube, Knight Inlet, and NAMOC (Figs. \ref{860856}, \ref{444764}). To eliminate straight channel segments, we have only included channel bends with sinuosities larger than 1.01. Assuming a flow velocity of 2 m/s, a value that is likely to be characteristic of large channelized turbidity currents \citep*{Pirmez_2003}, the results show that, with the exception of NAMOC, the Rossby numbers in these systems are all larger than 10 (Fig. \ref{860856}). In the case of NAMOC, the \(Ro_r\) values are less than 10 but larger than 1. However, while a flow velocity of 2 m/s is a good estimate of turbidity current speeds in the Amazon Channel \citep*{Pirmez_2003}, where sand-sized grains dominate the channel thalweg, it is likely an underestimate of the current velocities at the bottom of the NAMOC, where gravel is not uncommon \citep{Klaucke:1997wi}. Assuming flow velocities of 6.5 to 8 m/s for the lower part of the flow, as suggested by \citet{Klaucke:1997wi}, the Rossby number increases about fourfold for the NAMOC bends as well.