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PORTS AND HARBOURS OF THE DRITISH EMPIRE:
Questions.
1. At bar or entrance, what
is:-
(1) the minimum width ? (2) the
minimum
navigable depth. L.W.O.S.T.?
(Note-If between the en-
trance and the deep sea there are bars or shoals where a lesser depth occurs than the mini- mum indicated above, a list of such obstructions and of the depths over them (L.W.0.S.T)
should be given.)
Halifax.
The entranor between Devil Istand to the north-east, and Chebucto Hend to the south-west is 5 miles wide and the minimum depth is ft.
Montreal.
The entrance is vid the River St.
Lawrenge. (See under Quebec.)
Quebec.
CANADA (EASTERN) AND NEWFOUNDLAND).
33
580
St. John (New Brunswick).
The entrance to St. John Harbour in opposite Partridge Island. The width is and the depth 32 ft. (L.W.0.8.T.).
St. John's (Newfoundland).
The width of the entrance at the "Narrows" is ft. and the mini.
mum navigable depth 36 ft. (L.W.O.S.T.).
Note. The Ruby Rock lying just to the north of the channel in the narrown has a depth of water over it of 18 ft. (L.W.O.S.T.). The Merlin Rock lying to the south of the channel and just inside the Narrows has a depth of water over it of 27 ft. (L.W.O.S.T.).
2. In the approach channel! from bar or entrance to berthing accommodation, what is :-
(the minimum and
maximum width ? (2) the minimum and maximum depth, L.W.0.8.T.?
From the entrance to the quays the buoyed and lighted chanuel varies in width, with a minimum of 1 mile. The minimum depth in the channel in 36 ft. (L.W.O.S.T) and the maxi- mum 108 ft. (L..W.0.8.T.).
From Cap Rouge, above Quebec, the ship channel (which is u dredged channel in the river bed) is 450°ft. wide in the straight parts and from 500 ft. to 750 ft. wide at the bends. The depth is 30 ft. (L.W.).
At the traverse the width in the
ship channel is
audl the depth 30 h. (L.W.O.S.T.). From that point to the quays the width in and the depth (L.W.0.S.T.)
From the entrance to the quays the east channel (which is the deepest) has a width of 650 ft. und a depth of 32 ft. (L,W.Q.S.T.) for a distance of 6,000 ft. After this the width increases to about 2,000 ft.. and the depth to 50-70 ft. (L.W.O.S.T.).
From the Narrows" to the quays the channel is 1,200 ft. in width. mud the depth is from 54 to 72 ft. (L.W.O.S.T.).
3. What is-
(1) the rise and fall of tiden
(a) ordinary springs, (b) ordinary neaps?
(2) the rise of ordinary neaps above L.W.O.S.TI
(1) (a) Ordinary springs, 6 ft.
(b) Ordinary neaps, 5 ft.
(2) Rise of ordinary neapa ubore
L.W.O.S.T.. ft.
Montreal in not a tidal harbour, The tide in the St. Lawrence ends at Batiscan. The depth of water in the river is, however, increased by the greater flow from the great lakes above Montreal, and the tribu- taries below Montreal, in the spring and early summer.
(1) (a) Ordinary springs. 18 ft.
Ordinary neape, 13 ft.
ft.
(2) Rise of ordinary springs above
L.W.O.S.T.
(1) (a) Ordinary springs, 25 ft. 6 in. | (1) (2) Ordinary springs, 3ft. 9 ins.
(b) Ordinary neapa, 21 ft. 6 in.
(2) Rise of ordinary neaps above (2)
L.W.O.S.T.
ft.
(b) Ordinary neaps, 3 ft. 3 ins.
The maximum available depth of water is over 40 ft. (L.W.Ö.S.T.)
No enclosed docks.
No enclosed docks.
water is 36 ft. to 42 ft. (L.W.0.8.T.) at the wharves used by ocean-guing steamers,
Maximum available depth at quays. The maximum available depth of
32 ft. L.W.O.Š.T.
4. What is the maximum
available depth of water- (a) at piers or wharves,
L.W.0.8.T.?
(b) in the case of enclosed docks, in the en- trance locks, if any, and at dock quays, H.W.O.N.T.I
No enclosed dooks.
Maximum available depth at quays,
45-6 ft. (L.W.0.S.T.).
No enclosed docks.
Maximum available depth at quays,
31 ft. to 34 ft. (not tidal).
at the breakwater.
5. What are the respective lengths of piers, wharves, or (in the case of enclosed docks) dock quays, where the maximum depth of water, referred to in Question 4, exists ?
What percentage doon the total of these lengths bear to the total accommo- dation at the port ?
This depth is found at the new pier,
No. 2, recently completed for the Intercolonial Railway.
This pier provides two berths, each
700 ft, in length.
These berths represent
per cent.
of the total accommodation of the port which amounts to
This
A depth of 31 ft. to 34 ft. is found at
berths, or ft. of quere. represents par cent of the total accommodation at Montreal, which amounts in all to ft.
This depth in to be found for a
length of ft. representing per cent. of the total accommoda tion at the port which amounts
to
The depth of 32 ft. in to be found This depth is found at the heads of for 3,800 ft. of frontage on the wharves alongside which large west side of the harbour south of ateamera lie. Sand Point, now under construc- tion by the Dominion Govern- ment.
This represents 29 per cent. of the total present accommodation ac the port, which amounts in all to 12,928 ft. of frontage.
The second part of this question is
not applicable to the conditions of St. John's in view of the number of short wharves and jetties used for the fishing fleet.
A 13220 App 356a ké
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