The Navy Act,1957
Section 151. Commencement of sentence
(1) Subject to the provisions of sub-section (2), every term of imprisonment or detention awarded in pursuance of this Act shall be reckoned as commencing on the day on which the sentence was awarded.
(2)Where by reason of a ship being at sea or off a place at which there is no proper prison or naval detention quarters, a sentence of imprisonment or detention, as the case may be, cannot be duly executed, then subject as hereinafter mentioned, an offender under the sentence of imprisonment or detention, as the case may be, may be sent with all reasonable speed to some place at which there is a proper prison or naval detention quarters or in the case of an offender under sentence. of detention to some place at which there are some naval detention quarters in which the sentence can be duly executed; and on arrival there, the offender shall undergo his sentence in like manner as if the date of such arrival were the day on which the sentence was awarded and notwithstanding that in the meanwhile he has returned to his duty or become entitled to his discharge; and the term of imprisonment or detention, as the case may be, shall be reckoned accordingly, subject however to the deduction of any time during which he has been kept in confinement in respect of the said offence.