5.3.2 Y-2636-2 Shafting Arrangement.pdf

The document is a detailed technical drawing titled "Shafting Arrangement" for the Dredge Yaquina, a U.S. Army Corps of Engineers vessel. The schematic provides comprehensive engineering specifications for the vessel's propulsion system, including a top-down plan view and elevation view that detail precise measurements, component references, and the rotational configuration of the propellers. The drawing includes specific technical annotations for components such as propeller hubs, stern tubes, rubber bearings, shaft structures, and coupling flanges, with detailed references to individual part specifications.

The technical drawing is part of the pre-solicitation documentation for the Yaquina Shipyard Overhaul FY26 contract (Solicitation Number W9127N25BA012), which involves a comprehensive maintenance and repair project for the dredge vessel. The overhaul is planned for August 2025 through February 2026, with a 60-day dry dock period in December-February. The project will be awarded as a firm fixed-price job order under a Master Ship and Repair Agreement (MSRA), limited to contractors in California, Oregon, and Washington. Major work items include hull coating, propulsion system inspection and replacement, valve repairs, marine certifications, and dock and sea trials.