The China Sea directory - Sabrizain.org

416 RHIO STRAIT. - [chap. x.
high, about l^ miles long, three-quarters of a mile broad, and surrounded
at a short distance by reef : Tiemara island when first seen appears like a
bold point projecting from Eempang. Between it and Tiemara bank the
depths are 3^ to 7 fathoms. A shallow mud bank, having patches of
sand above high water), nearly fills the large bay south-westward of
Tiemara island, and extending outside the shore reef fronting Pulo Abu,
approaches the eastern extreme of Pulo Kantyil in a northerly direction ;
off the east end of Abu some rocks lie just inside the edge of the bank.
There is a narrow channel between this bank and the Tiemara islands, but
only available for boats.
Tiemara Kectlil, lying about a mile northward of Tiemara island,
is about a third of a mile in extent, and surrounded by a reef which on the
east side projects a quarter of a mile ; a ridge with rocky patches connects
these islands, and a patch of 3 fathoms lies N.E. 4 cables from the north-
east point of Tiemara island.
Pulo Kantyil, Ayer Radya, and Antu Islands.—The
eastern extreme of Kantyil, along and somewhat narrow point, is a quarter
of a mile west of Tiemara Kechil ; Ayer Eadya lies close to the north-
westward of Kantyil, and is the northernmost of four islands lying between
Tiemara island and Bulang strait. Antu is a small round island with an
islet off its north-east point, lying close to the north-east shore of Ayer
Radya. A reef surrounds both the island and the islet to the distance of
one-third of a mile.
Johannes Shoal.—On the edge of the bank, with 2^ to 3 fathoms
which fills up the bay between the eastern extreme of Pulo Kantyil and
Antu, lies Johannes shoal, a small 2-fathom patch with 7 fathoms close
outside. Sembolang point kept open of Tiemara Kechil leads eastward of
Johannes shoal, and of the reef extending from Antu.
Innang Reef is a small reef lying on the north side of the entrance
to Salat Bulang, nearly three-quarters of a mile from the south-east side of
Pulo Innang, with Pulo Antu bearing S. by W. f W. distant 1^ miles.
Patches of 4| and 5 fathoms lie about 3 cables south-west and north-
east of the reef. Sau lighthouse, be.aring N. by W. leads eastward of
Innang reef.
Pulo Innang, situated 1^ miles north of Ayer Radya, is about 2^
miles long, and 1^ miles broad; the southern part of this island forms the
northern side of the entrance to Bulang strait.
A reef fronts Pulo Innang to the distance of one-third of a mile, and its
outer part, abreast the north-east shore of the island, should not be
approached too close ; this part was formerly marked by a beacon. Sau
lighthouse kept westward of N. by W. ^ W. leads clear of it.