Attachment_3_Oregon_II_Davit_Operation___Maintenance_Manual.pdf

This is an Operation & Maintenance Manual for the NOAA/Oregon II research vessel's Miranda davit and BHY 5300 winch systems, produced by Umoe Schat-Harding Limited. The manual comprises five parts: Part One contains general information including specifications, operating procedures, and fault-finding guidance; Part Two includes technical drawings and schematics; Part Three provides service and spare parts lists; Part Four addresses contract-specific information; and Part Five contains certification documentation.

The manual details the Miranda MRT 3900 gravity davit system, which is designed for rescue boat deployment with a 3,900 kg design load and lowering speeds of approximately 33 m/min. The BHY 5300 hydraulic winch features enclosed gearing running in oil bath, centrifugal brakes for speed control, and both power hoisting and manual hand crank backup capabilities. Key operational procedures include launching, recovery, and power pack startup/shutdown protocols. Maintenance requirements are specified at weekly, six-weekly, and annual intervals, with specific attention to lubrication points (19 for the davit, 2 for the winch), brake lining inspections, and rope maintenance. The document includes performance specifications for the 37.3 kW electric motor, 33 USGPM hydraulic pump capacity, and 2,500 psi maximum working pressure. Spare parts lists are provided for davit components (sheaves, rollers, grease nipples), winch assemblies (brake units, bearings, seals), and hydraulic systems. Service rates effective December 1, 2011 range from €774 per nine-hour onshore workday to €2,064 per 12-hour offshore working day, with test equipment rental available at €315–€420 per day. Various certificates of conformity and test documentation from third-party suppliers including Pfeifer Rope & Tackle, Ensign Hydraulic Services, Crosby Group, and The Solid Swivel Company Limited validate equipment compliance with applicable standards.