9. The Board may, by notification in the official Gazette, declare-(a) the ports and airports which alone shall be customs-ports or customs-airports for the unloading of imported goods and loading of goods for export or any class of such goods;(b) the places which alone shall be land customs-stations ¹[or customs-inland container depot] ²[or customs inland-water container terminal] for the clearance of goods or any class of goods imported or to be exported by land or inland waterways;(c) the routes by which alone goods or any class of goods specified in the notification may pass by land or inland waterways into or out of Bangladesh, or to or from any land customs-station ³[or customs stations] or to or from any land frontier;(d) the places which alone shall be ports for the carrying on of coastal trade with any specified customs-ports in Bangladesh; and(e) what shall for the purposes of this Act be deemed to be a custom-house and the limits thereof.