The Mk-13 guided missile launching system (GMLS) is equipped to fire the RIM-66 Standard, RGM-84 Harpoon, and RIM-24 Tartar missiles, and capable of firing the Standard at a rate of one every eight seconds. 

• Repair and test of GMLS electrical, electromechanical, and mechanical assemblies and spares,
• Allows rapid repairs of GMLS item for naval platforms,
• GML System inspection and overhaul performance checks,
• Repair of GMLS equipment for dockside repairs, 
• Miscellaneous GMLS system hardware production, 
• Miscellaneous spares build/upgrades, 
• Assembly of  GMLS cables/harness, 
• GMLS alignment checks and solutions for alignment problems, 
• Combat system problem solutions,
• Ordalts and modifications,
• Repair corrosion damage and paint as required,
• Perform alignments,
• Mechanical alignments,
• Electrical alignments,
• Servo alignments,
• Test and repair circuit card assemblies,
• Performance requirements.

• IMS Controls,
• Guide Arm Retractable Rail Corrosion Control and Repair,
• Hoist Alignment and Adjustments,
• Guide Arm and Trunnion Corrosion Control,
• Guide Arm Components,
• Train & Elevation Alignment,
• Blast Door Operation and Alignment,
• Nitrogen System Checks,
• Strikedown Equipment,
• Motor Contactors,
• Water Injection System.