(1)The following conveyances shall be liable to confiscation:-(a)any vessel which is or has been within the Indian customs waters, any aircraft which is or has been in India, or any vehicle which is or has been in a customs area, while constructed, adapted, altered or fitted in any manner for the purpose of concealing goods;(b)any conveyance from which the whole or any part of the goods is thrown overboard, staved or destroyed so as to prevent seizure by an officer of customs;(c)any conveyance which having been required to stop or land under section 106 fails to do so, except for good and sufficient cause;(d)any conveyance from which any warehoused goods cleared for exportation, or any other goods cleared for exportation under a claim for drawback, are unloaded, without the permission of the proper officer;(e)any conveyance carrying imported goods which has entered India and is afterwards found with the whole or substantial portion of such goods missing, unless the master of the vessel or aircraft is able to account for the loss of, or deficiency in, the goods.