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Mobile Cranes on Barges?A Naval Architect's Perspective

by Paul B. Cromer, Todd Pacific Shipyards, San Pedro, CA, USA,



Document Type: Proceeding Paper

Part of: Ports '86

Abstract:

The purpose of this paper is to present a procedure for analyzing the effect of heel on a barge/crane combination in order to determine its suitability for lifting a load of given size directly overside. The physics of crane stability, both on the level and when heeled, hydrostatic properties of barges and the characteristics of the crane/barge combination are discussed in the Basic Principles Section. Stability Calculations are the subject of the next section, these include tipping moment calculation, graphic determination of the heel, the tipping/restoring moment inequality, and the limiting angle of heel for a given load. A sample calculation is shown in the Appendix.

Subject Headings: Cranes | Barges | Moment (mechanics) | Load factors | Shipyards | Safety | Load combinations

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