155. If a seaman having signed an agreement is discharged, otherwise than in accordance with the terms thereof, before the commencement of the voyage or before one month's wages are earned, without fault on his part justifying that discharge and without his consent, he shall be entitled to receive from the master or owner, in addition to any wages he may have earned, due compensation for the damage caused to him by the discharge not exceeding one month's wages, and may recover that compensation as if it were wages duly earned.