98. (1) A summary general court-martial may be convened-(a) 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.(b) on active service, by an officer commanding a flotilla or squadron not below the substantive rank of Commander, if in the opinion in writing of such officer commanding which opinion shall be final, it is not practicable, having regard to discipline and the exigencies of the service, to try the alleged offender by a general or district court-martial. (2) A summary general court-martial shall have an officer not below the substantive rank of a lieutenant Commander as president and shall have power to try any person subject to this Ordinance for any offence punishable therein and to pass any sentence authorised thereby.