'The Transactions of the Bombay Geographical Society. From January 1865 to December 1867. (Edited by the Honorary Secretary.) Volume XVIII.' [‎103] (243/268)

kattyawae, aad in the runn or KUTCIL
There is also a narrow strip of deep water only about 8 miles wide,
eaued the Swatch. It runs in towards the land for a distance of 35
nautical miles Originally one minute of arc measured along a meridian, but since 1929 redefined as 1,853.20 metres. , and is of great depth ; in some places it is upwards of
UkJ bithoms.. lids is evidently the outlet for the freshes of the River
Indus, being immediately opposite the Kaha mouth of that river. The
deep water is only about 12 miles from the land. There is a similar
swatch, but on a much smaller scale, and of less depth, opposite the
Hujarnree Mouth.
By reference to Model Chart, No. 1, it will be seen that there is
likewise a patch of deep water running up the Gulf of Cambay, but it
has only 21 fathoms water, though its length is 50 nautical miles Originally one minute of arc measured along a meridian, but since 1929 redefined as 1,853.20 metres. , and
greatest width 10 to 15 miles.
Opposite to Manora Pomtj ano. between it and Ras-Maiari^ there is
another submarine bay in 20 fathoms water, as shown by the purple
colour on the chart., It is about 35 miles wide, and runs about seven
miles inwards towards the land. Unfortunately for the Harbour of
Kurrachee,. this bay happens to be some miles to the westward of the
present entrance to that harbour. Immediately facing the entrance
to Kurrachee, there is a long line of shallow water, which continues in
a south by easterly direction for a distance of 75 nautical miles Originally one minute of arc measured along a meridian, but since 1929 redefined as 1,853.20 metres. . The
depth and width of this shoal of water is only—
5 fathoms for five miles out.
10
do.
„ eleven miles out.
15
do.
„ sixteen miles out.
20
do-
„ fully twenty miles.
This gives an average inclination of six feet in a mile, or a gradient of
1 in 900; such a gradient would be considerable in the bed of a confined
river, but in the open sea it is comparatively small. This bank or
shoal is also formed by detritus brought down by the Indus.
The Harbour of Kurrachee is nothing more than a large lagoon*
the set of the tide into it being very sluggish, and not direct, but
round a long corner, so to speak, taking as it does three quarters of an
hour to travel from the Gisri Mouth to Kurrachee, a distance of only
eight miles, and with a tidal rise of but from six to nine feet, and one to
two fathoms water at the entrance during low water.
If the long bank opposite to the entrance to this Harbour be formed by
the detritus of the Indus (of which there can be little doubt), then the