Attachment 5 YON 285 6B1 MILESTONE DSRA.xlsx

This file is a Milestone & Key Event List for the YON-285 vessel availability management schedule, documenting critical project phases and completion dates anticipated between October 2025 and March 2027. The milestone schedule establishes a comprehensive timeline for the Sasebo Availability (SA00) commencing September 30, 2026, with key phases including prefabrication work, dry docking operations (October 15, 2026), tank closeout (January 6, 2027), undocking (January 13, 2027), and work completion (January 28, 2027). Major milestones encompass engineering testing of main and auxiliary machinery, combat systems light-off, CANES software implementation, crew movement ashore and aboard, dock trials, fast cruise, and sea trials, culminating in the end guarantee period on March 25, 2027.

The schedule correlates with the YON-285 Outfit solicitation (N6264926R0013), a Firm-Fixed-Price contract for repair and continuous maintenance of the YON-285 Craft being performed at Commander, Fleet Activities Sasebo (CFAS) on Sasebo Naval Base. The milestone document references the Sasebo Availability Management Manual as the governing directive and indicates percentage completion targets for major phases including fuel off-load (25% complete), ammunition off-load (50% complete), and LAN migration (75% complete). The Navy contract specialist for inquiries is Jason Rankin (jason.m.rankin6.civ@us.navy.mil).