Designated Defensive/Staging Zones (DDSZs)

West Reef Sea Wall
The West Reef Sea Wall is only a sea wall in a figurative sense. Spanning the entire Western border of the West Reef, the wall is made up of 250 floating and anchored platforms, and sometimes weaponized oil rigs and ships. The defenses include AShMs, torpedoes, SAMs, and guns ranging from 5in to 20in. The wall is constantly patrolled by the IBN.

West Binaya Line, East Binaya Line, South Milanao Line, Midlanao System, East Milanao Line, Volono Deathtrap
The West Binaya Line is the IBMC/IBA extension of the West Reef Seal Wall in a sense, continuing its defenses for the entire West Coast of Binaya, and a few miles of the NW. The EBL, SML, MdlS, EML, and VDt are similar. The defensive lines consists of thousands of pillboxes, weapons nests, stations, bases, and more. Lots of theater air defense systems are stationed, along with artillery, short and medium range air defense, AT batteries, and an uncountable amount of MG and sniper nests, not to mention the sprawling trench and tunnel networks. The WBL, EBL, SML, MdlS, and EML are patrolled by the IBA, while the VDt is patrolled by the IBMC. Something important to note, the VDt is designed to be as hazardous to enemy ships without endangering friendlies, so naval mines are not favored. Instead, IBN and IBCG submarines regularly patrol the VDt.

Ridge-Trench Zone
The Ridge-Trench Zone is an IBN zone spanning from the Milanao Trench to the Volono Ridge. Like the VDt, the zone relies heavily on submarine patrols, assisted by surface and air patrols. The zone is patrolled by the IBN.