CO129-423 - Governor Sir May - 1915 [7-8] — Page 599

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POETE AND HARBOURS OF THE BRITISH EMPIRE:

Question.

10. What was the

revenue for the lust pom- pleted financial year ?

gross

Auckland.

Dunedin (Otago).

Lyttelton.

NEW

ZEALAND.

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Wellington.

The gross revenue for the year ended 30th September

1914, was 219,6134.

11. (1) Can the depth of water

(a) at the entrance and in the approach channel--

(b) in the case of en- closed docks, at the entrance lock, if any, of any impor tant dock or dooka- (e) at the principal

berths

be deepened to 40 feet at L.W.OB.T. (in the case of the berths at enclosed docks, H.W.O.N.T.), and can accommodation be pro- vided for vessels 1,000 feet in length, and of 100 feet beam?

If not, to what extent can deepening be effected, and for vessels of what dimensions (length.

draught, and beam at that

draught) can accommoda-

tion be provided ?

(2) In what period?

(3) At what approximate

cost-

(a) for the entrance and

approach channel?

(1) Yes. Vessels of 1,000 ft. in (1) Tes, at the satrance and up to Port

length and ft. beam can already

be berthed at the wharves. The harbour has a depth of 40 ft. and over| (L.W.O.S.T.) except in Rangitoto Channel, which can be deepened to 40 ft. (L.W.0.8.T.).

Chalmers.

(2) It would take one dredger about (2) 10 years.

four years on one shift or, with the (3) 250,000. distributed as follows:

Auckland Harbour Board's own plant

(two dredgers) one and a half to two

years.

(b) in the case of en-|(3) 30,0001, (for the channel).

closed docks for the

entrance lock, if

any, of such impor-

tant dock or docks ?

(c) for the principal

berths ?

(1) Yes, but Lyttelton would always be worked as a (I) Yes.

tidul port so that 38 ft. (L,W,O.S.T.) in the channel would be sufficient for vessels of 40 ft. draught at any tide.

(2) In 6 years.

[(3) About 200,0007. (N.B.-To get a depth of 36 ft. L.W.OST. would occupy 4 years and the cont would be about 150,000)

(2) Say 24 years.

(3) 35,0007. to 40.0001. (inclusive of proportionate part

of the cost of special plant).

12. What extra charges for

the maintenance

(a) of the entrance and

approach channel,

(b) in the case of on- closed docks, of the entrance lock, if any,

to such important! dock or docks, (c) of

the principal berths-

would be involved as a

result of these improve ments?

(Now- Where detailed es- timates have not

already been prepared only approximate ag ures are desired.)

The permanent works now under con- struction will reduce cost of main- tenance.

As regards any work at present in progress or in con- tamplation, these costs will only be increased slightly by additional maintenance dredging as the depth and length of the entrance channel, is increased year by year. In five years from now it is expected that the maintenance dredging will cost 12,000 per

annum.

Maintenance of wharves and structures will increase proportionately with increase of expital expenditure. Cost of maintenance of increased depths of harbour, channel, and approaches will not increase.

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