Aft A-frame Overboarding with Hydrographic Winch
Note: Calculated with Original A-Frame, Removed in December 2015
Crane Overboard Loading MCD worksheet. This worksheet calculator is to be used to evaluate the crane boom for use with the ship's winches or portable winches mounted to the main deck, with a block hung from a pad-eye on the crane boom. The analysis looks at both the loads in towing and when the package is suspended vertically during launch.
Deck Bolt MCD Calculation Spreadsheet for portable winches.