210
H
in the tracing
as the one to be
for the breakwater.—
adopted
It would thus start from about
the centre of Green Island, going distance
of
the north side of Green Island,
7,100
a straight line ford
yards
to the line of
the Harbour Boundary and thence, in Easterly direction until it cuts
a more
the line of 5 fathom soundings at the edge of the south side
of
Kellett's Bank, this second portion being 1694 yards long. The total length of breakwater would then be 2794 yards.
This would leave a channel between
Stonecutters Island and the breakwater
about 1,700 yards wide
of from 5 to 9 fathoms. In calculating the number
of junks required, the depth of water, nature of the bottom, and the proper depth below the surface of the water of
the top of the obstruction and its thickness must be considered.
I find that there are four sizes of large junks obtainable, and
I had them measured with the result shown in appendix X.
The depth of the water at ordinary low tides varies along the route proposed from 3½ to 5 fathoms.
Extreme ruin of 6 feet
with
— From experiments made in 1884 and reported upon to
in
C.R.E's letter 1st October 1884 it appears
that the Bank was bored to a depth of about 18 ft. It was found to consist
210
H
in the tracing
as the one to be
for the breakwater.—
adopted
It would thus start from about
the centre.
of
Island, going distaner
of
the north side of Green
7,100
a
straight line ford
yards
to the line of
the Harbour Boundary and thrner, in Easterly direction until it cuts
a more
the line of 5 fathom soundings at
the edge of the 8.2. side
of
Kelletts-
Bank, this second portion bring 1694 yards long. The total length of break = - water would then be 2794 yards.
This would leave a channel between
Stonecutters Island and the breakwater
about 1,700 yards wide
| about
.
of from 5 to
9
fathoms . In calculating the number
of
of junks required, the depth of water, nature of the bottom, and the proper depth below the surface of the water of
the top of the obstruction and its
thickness must be considered.
I find that there are four
sizes of large junks obtainable, and:
I had them measured with the result
shown in appendix X.
The depth of the water at ordinary low tides. Varies along the route proposed from 31⁄2 to 5 fathoms
Extreme ruin of 6 feet -
with
- From experiments made in
1884 and reported upon to
an
in
C.R. E's letter 1st October 1884 it appears
that the Bank was bored to a depth of
about 18 fut. It was found to consist
of
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