Gulwala Bank, with depths of less than 11m, extends about 6.3 miles S from a position about 3.5 miles W of the S entrance point of the Kim River. There is a drying patch near its N end.
Between Gulwala Bank and Tena Bank and Outer Bhagwa Sand there are several shoals with depths of less than 5.5m.
The intricate navigation required to pass through the channel E of Gulwala Bank, with its rapid tides, should not be attempted without local knowledge. At night, or in a large vessel, it is necessary to keep well W of Gulwala Bank.