USS Toledo (SSN 769) Finally Enters Drydock during Naval Shipyard Overhaul May 1, 2021

When USS Toledo (SSN 769) arrived at Norfolk Naval Shipyard on January 21, 2021 to begin a planned 2-year engineered overhaul, expected to require approximately 3.5 million manhours of effort, its scheduled drydock was unavailable.

Drydock 2 at the shipyard, the assigned drydock, was in the midst of its own overhaul. This meant that many Toledo maintenance activities had to be resequenced, modified or delayed until the ship was docked. As only one example, the ship’s diesel generator was required to support docking, so all planned maintenance work on the diesel generator and it’s numerous support systems was impacted by this delayed docking. The drydock overhaul upgraded and rehabilitated the caisson, flood wall and piping and was conducted as part of the Shipyard Infrastructure Optimization Program (SIOP). This urgently required SIOP effort, as is the case with many other SIOP activities, conflicted with the conduct of planned ship maintenance.

With the drydock upgrade and rehabilitation work completed, Toledo finally was docked on May 1, 2021.