Regulations for the Navy Part IICentral Regulations · 1957
(1) The Commanding Officer shall be responsible for the safe custody of every person, offender, or prisoner who is placed in Naval Custody in the ship or establishment.
(2) such custody may be open or close, according to the circumstances of each case and at the discretion of the Commanding Officer.
Explanation: - Open custody involves only such restraint as may be necessary for safe custody, whereas close custody involves deprivation of all liberty and continuous, supervision, and is equivalent to confinement in the sense in which it is used in sub-section (2) of section 151.