240. Ship not to sail without certificates A and B.- (1) A ship intended to carry unberthed passengers or pilgrims shall not commence a voyage from the port or place appointed under sub-section (1) of section 237 , unless the master holds two certificates to the effect mentioned in sections 241 and 242. (2) The customs collector whose duty it is to grant a port clearance for the ship shall not grant it unless the master holds the aforesaid certificates. | 
