All tidelands and submerged lands within the boundaries of the City shall be designated as “tidelands” or T zone. “Tidelands” shall be deemed to be all the land between the ordinary high water mark and the pierhead line, per miscellaneous Map 399, recorded September 12, 1960. Submerged land shall be that land which is always covered by water. (Ord. 1281 § 2, 1970; Ord. 1212 § 1, 1969; prior code § 33.530).