159. (1) Any agreement with the crew may contain a stipulation for payment to a seaman, conditional on his going to sea in pursuance of the agreement, of a sum not exceeding the amount of one month's wages payable to the seaman under the agreement. (2) Stipulations for the allotment of a seaman's wages may be made in accordance with this Ordinance. (3) Save as aforesaid, an agreement by or on behalf of the employer of a seaman for the payment of money to or on behalf of the seaman, conditional on his going to sea from any port in Bangladesh shall be void, and no money paid in satisfaction or in respect of any such agreement shall be deducted from the seaman's wages and a person shall not have any right of action, suit or set off against the seaman or his assignee in respect of any money so paid or purporting to have been so paid. (4) No seaman, who has been lawfully engaged and has received under his agreement an advance payment, shall, wilfully or through misconduct, fail to attend his ship or desert therefrom before the payment becomes really due to him and if he fails to attend his ship or deserts therefrom, he shall be liable to a fine which may extend to one thousand Taka or at the discretion of the Court, to imprisonment for a term which may extend to one month. (5) Where it is shown to the satisfaction of the Shipping Master that a seaman lawfully engaged has wilfully or through misconduct failed to join the ship, the Shipping Master may withhold any of the seaman's certificates of discharge for such period as he may think fit, and while a seaman's certificate of discharge is so withheld, the Shipping Master may refuse to furnish copies of any such certificate or certified extracts therefrom.