Section 2(d) in The Major Port of Tuticorin (Harbour Craft) Rules, 1976
(d)"Inner Harbor" means that part of the Ports' water area which lies east of the base line (South North road) having bearing of 205' and includes the turning basin, eastern dock arm, oil jetty and any future berths docks dredged and developed from time to time, west of the two entrance heads and enclosed by the breakwaters.
