The Promoters shall deposit at the Admiralty Office, Whitehall, a Copy of such Memorial, and Plans and Sections and Working Drawings of the Harbour and the proposed Works connected therewith, and shall make Application to the Admiralty to sanction such Works, and thereupon the Admiralty, so soon as may be, shall give or withhold their Sanction to the proposed Works, or shall indicate what Alterations, if any, shall be made in the proposed Works.