What it does
This schedule defines the geographic limits of a number of named ports by listing, for each port, the points and connecting lines that bound the port area. Each port entry follows a repeating form, beginning with the phrase "The limits of the Port of [name] is the area bounded by a line," followed by a series of coordinate points, references to the "high-water mark" or "low-water mark", island shorelines, geodesics, parallels and meridians, and local features such as beacons, wharves or creeks. Examples from the text include the Port of Brisbane, where sch.2-sec.1 sets out a long chained sequence of coordinates and foreshore descriptions, and the Port of Cairns, where sch.2-sec.4 uses both low-water and high-water mark lines around corals and islands.
Two structural features in the schedule matter for reading it as a legal instrument. First, the schedule is divided into parts and divisions, for example "sch.2-pt.1 Port of Brisbane" and "sch.2-pt.2 Other ports", and within part 2 there are further divisions labelled "Ports subject to section 7 (3)" and "Ports subject to section 7 (4)". Those division headings explicitly link the listed ports to section 7(3) or section 7(4) of the principal Act, since the schedule is headed "Other ports" and each division is named "Ports subject to section 7 (3)" or "(4)". The schedule itself therefore both defines boundaries and signals that different ports are to be treated under different subsection headings of the Act, as shown by the textual headings that precede the port descriptions.
Second, the text repeatedly uses statutory geographic standards, for example the "high-water mark" and the "low-water mark", together with explicit latitude and longitude coordinates, for example sch.2-sec.1 for Brisbane begins "starting from the high-water mark at the northern extremity of Point Cartwright (approximate latitude 26°40.764' south, longitude 153°08.341' east)". Other ports use a mix of coordinates and named local features, for example sch.2-sec.2 Port of Abbot Point references "the port entrance beacon at Bowen Boat Harbour" and the "northern extremity of Gloucester Head on Gloucester Island". In short, the mechanical change made by this schedule is to fix, for each listed port, a set of outer and inner boundary markers that convert general maritime space into a legally delimited port area within the meaning of the Act to which the schedule is attached.