SNAP II was replaced by which system?

The correct answer is based on the fact that SNAP II, which stands for Standardized Navy Automated Messaging System, was indeed replaced by the Organizational Maintenance Management System - Next Generation (OMMS-NG). OMMS-NG provides updated capabilities for tracking and managing maintenance activities in the Navy, streamlining processes and enhancing operational efficiency. By utilizing a modern digital framework, OMMS-NG integrates various maintenance management tools that help improve maintenance accountability and reduce administrative burdens compared to its predecessor.

In contrast, while SNAP III is an evolution of the SNAP systems, it does not replace SNAP II. Similarly, NTCSS II (Naval Tactical Command Support System) and SKED 2.1 (a personnel scheduling system) serve different functions within Navy operations and do not directly replace SNAP II in terms of maintenance management processes. The specific focus on maintenance and operational readiness is what distinguishes OMMS-NG as the appropriate successor to SNAP II.