90
THE NEW ZEALAND GAZETTE. [No. 10

The front light stands at an elevation of 10 and
the back light of 43 feet above high water; the two
lights being 1,250 feet apart, and in line on a N.W.
$\frac{1}{3}$ W. bearing, leading within a cable's distance of the
Fairway Buoy.

Also two white leading lights will be exhibited
from the Quarantine Station, near the White Cliffs,
which, when in line, will lead past the Middle Bank
Buoy, and to the entrance of the Mary River.
The front light is placed at a height of 30 and the
back light at a height of 80 feet above high water;
their distance apart being 1,380 feet, and the line of
bearing S.W. by W. $\frac{1}{2}$ W., leading within a ship's
length north of the Middle Bank Buoy.

G. P. HEATH, Commander, R.N.,
Portmaster.

Department of Ports and Harbours,
Brisbane, 10th January, 1880.

HANNAH SHOAL, NORTHUMBERLAND ISLANDS.

THE correct position of Hannah Shoal, as ascertained
by Staff Commander Bedwell, R.N., the Admiralty
Surveyor, is N. by E. eight miles from Allandale
Island, or four miles, N.W. by N. of the position
now shown on the chart.

The shoal, on which there is a depth of 4 fathoms,
is of small extent, with from 24 to 28 fathoms
close to.

The summit of Hexham Island in line with the
east side of Allandale Island leads over it.
Hixon Islet shut in with Onslow Point—the south
extreme of No. 1 Percy Island—on a W.N.W. bear-
ing, leads upwards of a mile to the eastward, and
Low Rock in line with Cheviot Island bearing S.E.
by E. $\frac{1}{2}$ E. leads nearly three miles S.W. of the shoal.

G. P. HEATH, Commander, R.N.,
Portmaster..

Department of Ports and Harbours,
Brisbane, 9th January, 1880.

SINGAPORE ROCK, K ISLANDS AND OUTLYING DAN-
GERS, ROCKS OFF CAPE CONWAY, AND REEFS IN
REPULSE BAY.

THE following information relative to Singapore
Rock, the K Islands, and outlying dangers, rocks
off Cape Conway, and reefs in Repulse Bay,
has been supplied by Staff Commander Bedwell,
R.N., the Admiralty Surveyor.

Singapore Rock: This danger, which is of very
small extent, uncovers at ordinary spring tides, and
lies half a mile south of the west point of L1
Isles.

There are from 9 to 18 fathoms close to.

Clearing Mark: Linné Peak, seen through the
passage or gap between M Isles on a N.W. $\frac{1}{4}$ N.
bearing, leads two-thirds of a mile outside Singapore
Rock.

K1 Isle (Peak) and Outlying Dangers: East
one mile and three-quarters from K1 Island lies a
rock 3 feet above high-water springs, and nearly in
the passage between these is another rock, uncover-
ing at low-water neaps.

This latter danger bears E. by S. $\frac{1}{2}$ S., one and a
quarter miles from the peak.

There are 17 to 28 fathoms round these dangers.

A dangerous reef, nearly four miles in circum-
ference, with 3 feet of water on its shallowest parts,
and 21 to 29 fathoms close around, exists sixteen
miles E. $\frac{1}{4}$ N. from K.1 Island.

E. by N. $\frac{1}{4}$ N., eighteen and one-third miles from
K1 Island, is another dangerous reef about 3 cables
in extent, which covers at a quarter flood, with 20 to
30 fathoms within a cable's length. The detatched
reef shown on the chart, bearing E. by N. $\frac{3}{4}$ N.

twenty-one miles from K1 Island, may possibly be
intended for this latter danger.

The shoal shown as sand and rocks on the
Admiralty charts, bearing E. by N., distant twelve
and a quarter miles from K Island, was found to be
a low sandy cay of small extent, covering at high-water
neaps, forming the northern edge of a coral reef one
mile in circumference. It bears E. $\frac{1}{2}$ N., nine and
three-quarter miles from K Island; the old position
being three miles too far to the N.E. There are
from 25 to 30 fathoms close to the edge of this
reef.

K4$\frac{1}{2}$ Island: About 2 cables in extent and 93 feet
high, with a few bushes on the summit, was found to
be one mile E.N.E. of the position assigned to it on
the charts. It bears E.N.E., distant nine and a half
miles from K Island.

This islet lies at the western edge of a large
encircling coral reef, covering at a quarter flood, six
miles in circumference, the north extreme of which
is one and a half miles north of the islet. On the
same reef, and near the western edge, three-quarters
of a mile north of K4$\frac{1}{2}$ Islet, is a low bushy islet not
shown on the chart. It is fronted by a white sandy
beach.

K4 Island is less than a quarter of a mile in
extent, and bears N.E. $\frac{1}{4}$ N., distant nine and a half
miles from K Island.

This position is one mile south of that shown on
the present charts. The island is 102 feet high,
with a few pandanus trees on the highest part; a
sand-spit covering at high water extends a quarter of
a mile west of it. This island is surrounded by a
coral reef upwards of a mile in extent, with 17 to
28 fathoms at a cable's distance.

The two sandbanks shown on the chart bearing
E.N.E. six and a half miles and N.E. by N. seven
and a half miles respectively from K Island, do not
exist, there being 27 to 29 fathoms on the positions
assigned to them. The foul ground shown in the
charts as extending N.W. one and a half miles from
K Island is also an error, as the ledge only extends
half a mile to the N.W. side of that island, the N.E.
side being steep to.

K2 (Hummocky) is steep to all round, and the
encircling dangers shown on the published charts do
not exist.

Three rocks are also steep to, and the reef re-
ported half a mile off their N.W. extreme does not
exist. There are from 13 to 23 fathoms close round
these rocks. The dry sand marked on the chart as
having been seen by Captain Flinders in 1802 is six
and a half miles W.S.W. of its true position.

It covers at half flood, and lies at the northern
edge of a coral reef half a mile in extent, with from
16 to 29 fathoms close to.

Cape Conway and Repulse Bay: Half a mile
E.N.E. of Cape Conway, and 4 cables S.E. of the
rock to the N.E. of the cape, is a small rock awash
at low-water neaps, with 11 and 12 fathoms close to
the outer edge.

A quarter of a mile south of the cape is another
detached rock covering at half flood. One and a half
miles south of Cape Conway, close to soundings of
15 fathoms on the chart, is a shoal of 3 fathoms; its
vicinity is marked by strong tide rips.

At a distance of five miles N.W. of North Repulse
Island, and somewhat less than a mile from the shore,
are two reefs covering at half flood, with from 3 to
5 fathoms close to.

G. P. HEATH, Commander R.N.,
Portmaster.

Department of Ports and Harbours,
Brisbane, 9th January, 1880.