The China Sea directory - Sabrizain.org

356 GASPAK STRAIT. [cHij. vii.
The dangerous coast o£ Billiton, between Mendanao and Langwas light-
house, should not be approached under 6 miles, unless bound to Tierutiup
bay.
Standing to the Westward, Shoal-water island, if not brought to
the eastward of North, will clear all the shoals southward of it, and the lead
will also give good warning when standing towards them, as they lie some
'1 or 5 miles within the edge of the 10-fathoms line. Shoal-water and Han-
cock islands must be approached with caution, as the lead does not give
much warning when nearing their ledges ; they should on no account be
approached within a distance of 2^ miles. Hancock island bearing South,
leads eastward of Bliss shoal, between which and Ayer island a vessel may
stand to the westward until the summit of that island bears N.N.E., which
will lead eastward of Vansittart shoals.
Klambau island bearing W. J S. leads southward of the dangers extend-
ing from Ayer and Gresik islands. The east side of Gresik island may be
approached to one mile, but the east side of Klemar island has a rock lying
one mile off ; and to clear this rock Gresik island must not be brought east-
ward of S.S.E. The summit of Ayer island, in line with the east extreme
of Klemar island bearing S. by E., leads 1^ miles eastward of Hewitt
shoal.
Directions.—Stolze Channel from the Northward.—
Having passed eastward of Gaspar island, bring it to bear N.N.W. ^ W.,
with that bearing on astern, a course S.S.E. J E. will lead into the fairway
of Stolze channel, midway between Ayer Lantju and Hewitt shoal, and
abont 2 miles eastward of Gresik island. When Ayer Lantju bears
N. by E. an opposite course may be steered to pass between Gresik island
and the dangers extending northward from Kasenga.
When Gresik island bears N. by W. | W., all danger near the Lima
islands will be cleared, and if kept upon that bearing it will lead mid-
channel between White rock and Shoal-water island, having passed which
the most convenient course may be shaped to the southward, giving a good
licrth to the shoals.
Entering Stolze channel to the eastward of Akbar shoal, between it and
Langwas lighthouse, steer to the south-west,— giving Tierutitup bay a berth
of not less than 8 miles—and when Ayer Lantju lighthouse or Klemar
island can be made out, bring the latter to bear S.S. W., and steer for it on
that bearing, which will lead well to the westward of the dangers near
Langgir island. When Ayer Lantju lighthouse bears East, steer S.S.E. \ E.,
until it bears N. by E., which kept astern, leads midway between Gresik
island and Kasenga island reef ; when proceed as before.
"Working through from the Northward.—Standing to
the Eastward the .shores of Tierutitup bay should not be approached