175-WLM_633_1_1_-_D.pdf

This is a technical drawing package detailing cathodic protection specifications for a U.S. Coast Guard Coastal Buoy Tender (WLM), with drawing number 175-WLM-633-001. The drawings show zinc anode locations, installation requirements, and detailed specifications for a ship's hull protection system.

The package includes a bill of materials listing required components including various zinc anodes (Types ZHS-23, ZHS-42, ZSS-12, and ZTS-5), mounting hardware, and antisize compound. The technical specifications mandate that zinc anode surfaces must not be painted after installation, electrical resistance between anodes and ship structure must be less than 0.1 ohm, and surfaces beneath anodes must receive complete anticorrosive treatment. The drawings provide detailed installation locations and measurements for anodes throughout the vessel, including sea bay, tanks, and hull sections, with specific mounting requirements using studs, washers, and nuts. Z-drive anodes are noted to be vendor-supplied per general note 8.