TAB 3 DRAWING 75-WAGL_4400_3_1_-_L.pdf

This is a USCG engineering drawing that supersedes USCG drawings 75-WAGL-4400-1 and 75-WAGL-4400-2, depicting a propeller design for Suit F 1312 MDE. The document is issued by the United States Coast Guard Office of Naval Engineering located in Washington, D.C. 20593.

The drawing provides comprehensive technical specifications for a right-hand propeller (STD) including detailed dimensional data, material specifications, and manufacturing tolerances. Key propeller characteristics include: 4 blades, 48-inch diameter, 40-inch nominal pitch, 525 RPM operating speed, 9.328 cubic feet expanded blade area, and a weight of 412-430 lbs including hub. The propeller is designed for ABS certification with maximum rated output of 1,000 horsepower at 2,100 RPM, operating with inertia of 17.19 lb-ft² in air and 22.42 lb-ft² in water. Material specifications require nickel-aluminum-bronze Type A construction per ABS rules for building and classing steel vessels. The document includes detailed specifications for blade root fillets, balance requirements (not exceeding 0.11 oz-in), surface finish tolerances (63 micro-inches maximum), dimensional inspection procedures, and installation guidance. Blade section geometry is provided with precise width and thickness measurements at various radii (0.2R through 0.9R), and trailing edge detail specifications are included. Propeller advance coefficients are tabulated for ambient temperatures ranging from 20.0°F to 90.0°F.