Section 706(a) in Police Regulations, Bengal , 1943
(a)When treasure is conveyed by steamer, a guard of one head constable and six armed constables shall be detailed with any amount not exceeding one lakh. The men shall furnish one sentry by day and two by night, if necessary. With a despatch of treasure exceeding one lakh, the guard shall be increased in proportion up to a maximum of 12 constables.
