110C-WPB_161_5_1_-_G.pdf

The document is a detailed engineering drawing set for a Stern Tube Installation, specifically for the USCGC NAUSHON, produced by Bollinger Machine Shop. The technical drawings provide comprehensive schematics for stern tube components, including multiple detailed views, cross-sections, and installation specifications. The drawings include precise measurements, material specifications, and assembly instructions for various tube and bearing configurations, with notes indicating revisions and specific requirements for vessel shaft seal and tube installation.

The associated federal solicitation is for diving support services to repair shaft seals on the USCGC NAUSHON, located in Ketchikan, Alaska. The United States Coast Guard seeks contractors to provide a 3-day diving operation from April 21-25, 2025, involving temporarily plugging stern tubes and supporting shaft seal replacement. The work requires a dive crew of experienced professionals to work 10-hour days, facilitating communication between divers and maintenance technicians. Quotes are due by April 11, 2025, with the contract to be awarded on a best-value basis, requiring vendors to be registered in SAM.gov and submit a detailed pricing breakdown.