PSI Drawing 21908 (Shafting Arrangements).PDF

This is a technical engineering drawing showing the shafting arrangements for the U.S. Army Corps of Engineers 8000 CU YD Hopper Dredge. The drawing includes detailed specifications and measurements for various components including the hub face, strut barrel, compression rings, oil-slinging coupling, and servo box. The drawing contains both a detailed cross-section view (Detail A) and a full-length schematic showing the shaft assembly running through the auxiliary machinery room and generator room.

The drawing includes specific measurements and clearances for maintenance accessibility, dry weights of components (like the hub w/blades at 18,142 lbs), and mass elastic data. Multiple revisions are documented in the top right corner, with the most recent changes relating to shaft dimensions and specifications. This technical document appears to be part of a larger set of engineering specifications for the dredge vessel Wheeler that is the subject of the emergency drydock services solicitation.