Selat Penuba is deep, but is obstructed at its W end and is not used by shipping.
Tengah Islet, about 30m high, is located on a reef in the E fairway of Selat Penuba, about 1 mile SE of the E point of Pulau Selayar.
Serang Islet, about the same height as Tengah, lies about 1 mile SE, just within the 5m curve off the S side of the strait.
Pulau Posik (NW Pulau Singkep)
Posik is the central and principal island of a group which lies off the NW side of Pulau Singkep, and is separated by Selat Sebayur.
Other islands in the vicinity of Posik include Bandahara, Sempeng, Rusukbuaya (Roesoek Boeaja), Nibung, Pajang, and Noja, as well as smaller islets ...
26 Feb 12