(a)no goods shall be loaded or unloaded from, an aircraft or vessel for carriage coastwise at any time whatsoever except as prescribed by the commissioner.

(b)no goods for carriage coastwise shall be loaded on to, or unloaded from, an aircraft or vessel, except at an approved place of loading or at a sufferance wharf:

Provided that goods may be loaded on to, or unloaded from, an aircraft or vessel, from or on to another vessel or vehicle used for the purpose of the carriage of goods between that aircraft or vessel and an approved place of landing or sufferance wharf;

(c) all goods which have been unloaded or landed from a coasting aircraft or vessel shall, if the proper officer so requires, be conveyed forthwith to a customs area or transit shed.

(2) A person who contravenes this section, or any of the conditions which may have been imposed by the proper officer, shall be guilty of an offence and shall be liable to a fine not exceeding forty thousand shillings; and any goods in respect of which the offence has been committed, shall be liable to forfeiture and the coasting aircraft or coasting vessel in relation to which the offence has been committed may be seized and detained until the fine is paid.