The China Sea directory - Sabrizain.org

430 RHIO STRAIT. [ohap. x.
kept' open of it, to avoid Johannes shoal and the reef extending from Pulo
Antu.
To avoid Innang reef, keep Satf lighthouse well open of Pulo Innang ;
and to clear the reef fringing that island, keep the north-east point of
Innang Kechil open of the eastern extreme of Pulo Sau (with the light-
house upon it) ; this will lead clear of all danger as far as the eastern
extreme of Sau, which should not be approached nearer than half a mile
on account of the small reef lying a quarter of a mile south-east of the
lighthouse.
After passing Innamg Kechil, in standing to the westward, do not shut
in the eastern extreme of Pulo Sau behind Innang Kechil ; this will lead
clear of Van Groghs' island reefs and of Malang Orang.
Tahjong Sau, kept westward of S.W. ^ W., leads southward of Pan reef;
and when passing eastward of that danger, care must be observed not to
bring Barbukit hill to the eastward of North, or Sau lighthouse southward
of S. ^ W., until Johore hill bears N.N.W. ^ W. ,-
and
then not to bring
the last-named hill to the northward of N.N.W. | W. until Pulo Nongsa is
open of Nongsa point.*
In working between the Pan reefs, keep Tanjong Sau well open of
Tanjong Malang Orang, or the eastern extreme of Innang Kechil south-
ward of S. by E., in order to avoid the dangerous reef extending about
6 cables from the Battam shore.
Standing to tlie eastward, towards Pulo Talang, at the
southern entrance of Rhio strait, be careful to give the south-eastern shore
of that island a berth of 2 miles, and to keep South-west hill, on Siolon
island, well open of Talang, to avoid Hendrik Jan rock. The south-west
point of Siolon and Alligator island may be approached to half a mile.
When nearing the Topics, South-west hill kept well open of the southern
point of Alligator island, will lead southward of those dangers and of
Rotterdam reef, in about 4^ fathoms of water ;
the south-western extreme
of Pulo Pankel kept northward of N.W. ^ N. leads westward of Rotterdam
and Dutch shoals. Topie island kept eastward of B.by S. J S. leads southward
of Dutch shoal.
To clear the bank of 4 to 5 fathoms, extending 2^ miles southward of
the Topics, Siolon hill must be kept open of S.W. hill, until the apex of
Pulo Loban is open westward of Pulo Pankel.
The south-west end of Pankel should not be approached nearer than
half a mile as the reef is steep-to ; the west side may be neared to 7 or 8
fathoms, but off its northern end keep Little Garras lighthouse open of
Pulo Pankel, to avoid the shoal water extending N.N.W. from it.
» Barbukit bill may be recognised by the lowland adjoining it, -whilst Johore hill
terminates abruptly to the westward.