Armagon shoal (E India)

Armagon Shoal, with depths ranging from 3 to 9.1m, extends about 15 miles N from a position 1.5 miles NE of Point Pudi.

A narrow, detached shoal, about 2.5 miles long, with depths of 10 to 11m, lies close N of the N end of Armagon Shoal. The sea sometimes breaks over the shallowest part of Armagon Shoal.

A shoal, with a least depth of 4.9m, lies about 2.3 miles offshore abreast of Tummalapenta.

The depths are very irregular in the vicinity of this shoal and up to 7 miles N of it.

In the approach to Blackwood Harbor, the current along this part of the coast, which includes Armagon Shoal, usually sets with the prevailing wind, but at times reverses itself.