Department by dredging around harbour moorings so that they could be lifted for maintenance purposes. The total quantity of spoil removed during the year by these two dredgers amounted to 69,000 cu. yds.
5.56. The self-propelled hopper dredger carried out work in the Dangerous Goods Anchorage and in the Central Fairway and removed a total of 210,000 cu. yds. of spoil.
5.57. The Division's divers made inspections of piers, seawalls, pumphouses and pipelines, logging a total of 503 hours underwater.
Boring and Surveys
5.58. 223 marine boreholes totalling 5,624 ft. were sunk at various sites in the Colony waters.
5.59. Current observations were carried out at various locations and float tests for the proposed container terminal were made at Kwai Chung and for the proposed submarine sewage outfall at Pak Kok, Castle Peak. Echo-sounding surveys were made to check the seabed level along the cross-harbour water mains between Hung Hom and North Point. Surveys were also carried out for checking the progress made on reclamations and site-formations, for measuring underwater work and for investigating sites of proposed works.
General
ROADS AND DRAINAGE DIVISIONS
Chief Engineers:
Hong Kong Island: A. T. ARMSTRONG-WRIGHT, C.Eng., F.I.C.E., Kowloon: G. A. G. SAPSTEAD, C.Eng., M.I.C.E. New Territories: C. W. H. DALLAS, C.Eng., M.I.C.E. (Acting) CHAN Nai-keung, C.Eng., M.I.C.E., A.M.I.T.E. (Acting)5.60. These three divisions, regionally located on Hong Kong Island, in Kowloon and in the New Territories are responsible for the design, construction and maintenance of the roads and drainage systems.
5.61. The major effort of the Civil Engineering Office again was directed to road construction and further progress was made in the programme of works designed to meet the rising traffic demand.