s 243 Length of term of service detention: general provision
(1) This section applies where a sentence of service detention is passed in respect of a service offence. (2) Where the detention is imposed by a court other than the Summary Appeal Court, it must be for the shortest term (not exceeding the permitted maximum) that in the opinion of the court is commensurate with the seriousness of the offence or the combination of the offence and one or more offences associated with it. (3) Where the detention is imposed by an officer at a summary hearing or by the Summary Appeal Court, it must be for the shortest term (not exceeding the permitted maximum) that in the opinion of the officer or court is commensurate with the seriousness of the offence (or, if it is imposed in respect of two or more offences, the seriousness of them taken together).