The China Sea directory - Sabrizain.org

458 VARBLLA AND DUBIAN STEAITS. [chap. xr.
In working, and standrng-torwards MJddleburgh shoal, do not briaigthe
peak of False Durian open westward of Forth Passage island more than
the breadth of that island; and when standing towards the patch off Bed
island, tack before Ealse Durian peak touches South Passage island. The
tides are very strong between Middlebnrgh shoal.and; Red island^.^the flood
setting to the southward,, and the ebb to the northward, from 3 to 4 miles
an hour at springs.
To pass through Phillip Channel.—If bound to Singapore
having passed between Middlebnrgh shoal and the Sabong shore, and
brought Eed island to bear Eastj a course about N.E. by N, may be
steered, guarding against tide, to pass through' Phillip channel to the
westward of Doncan island and between Cap and Round islands, neither
of which should be approached nearer than three-quarters of a mile
on account of the^ reefe which, project from them.* ;
In this route take care that the vessel is not set too near the dangers
which lie at the entrances and near the points of Moroi Suji, andJambuI
straits, for the tide runs through them with a velocity, of 3 or 4 knots; an
hour at springs. After shaping a course to pass between Cap and.Eound
islands, the dangers off Red island and the Twins will be avoided, by not
bringing Pulo Doncan to the northward of N.E. by E. ; and Cap island
kept on a N.E. or N.E. by N. bearing will lead well to the westward of
the dangers extending from Pulo Doncan.
Having passed Cap island, briug it to bear S.S.W. astern, which will
lead through in mid-channel between Round island to the westward, and
Helen Mar reef to the eastward. The depths in this track are variable^
15 to 35 fathoms.
In working, if standing westward of the south end of Round island;
do not go farther in that direction than to bring Raffles lighthouse on
with the north-west end of Long island, to avoid the reefs lying south-
west of Red island.
Standing towards the north-east sides of Round and Long islands^
Cap island should not be brought southward- of S. by W. ^ W., or Raffles
lighthouse eastward of N. f E. ; Cap island kept to the southward of
S.S.W. f W. leads clear of Helen Mar reef, and when the northern peak
of Great Carimon is well open northward of Red island, a vessel will
be northward of that danger, and may proceed into the fairway of the main
channel of Singapore strait. To proceed from thence to Singapore road see
page 108,
If preferred, instead of using Phillip channel, a vessel after passing
between Middleburgh shoal and the Sabong shore, may steer a North
* See Admiralty chart:—Singapore strait, No. 2,403.
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