97. (1) A district court-martial may be convened by any authority having power to convene a general court-martial or any prescribed officer empowered in this behalf and to such extent as may be specified in the warrant issued under the hand of the Chief of Naval Staff. (2) A district court-martial shall have an officer not below the substantive rank of lieutenant Commander as president and shall have power to try any person subject to this Ordinance, who is of the rank of lieutenant or below or a sailor, and to pass any sentence authorised by this Ordinance not exceeding,-(a) in the case of an officer, forfeiture of seniority in rank or forfeiture of time for promotion for a period of one year; and(b) in the case of a sailor, short imprisonment.