Coast Guard Drawing 65B WD 1107-003 Rev A Stack Mods to Suit IF 1312 MDE.pdf

This is a detailed technical drawing package from the U.S. Coast Guard Office of Naval Engineering showing stack modifications to suit IF1312 MDE (Main Diesel Engine). The drawing set consists of multiple sheets containing elevations, sections, and detailed views of exhaust stack modifications, including materials lists and general notes.

The drawings specify modifications to vessel exhaust systems, including removal and replacement of various components like supply plenums, filter hoods, louver openings, and boiler flue enclosure boxes. Key technical specifications include frame spacing of 18 inches throughout affected areas, requirements for smooth grinding of all burrs and sharp edges, and detailed material specifications for aluminum components. The package includes precise measurements, cutting specifications, and installation details for exhaust system components. The drawings are specifically developed for application on USCG vessels of this class, with requirements for approval before use on other vessels.