General HydroStatics
Ship Stability Software
Command of the Week
(New or interesting aspects of GHS that you may not know about)

(Requires GHS with Crane Module)

While the BOOM command is a convenient means of locating the weights of various crane elements—converting locations you give in crane coordinates into ship coordinates—it is only one step of many needed to completely model a real-world crane.

The Crane Module and specifically the CRANE.WIZCO wizard makes the task of crane modeling relatively easy. It accommodates pedestal-mounted cranes as well as cranes based on the deck, providing several ways of distributing weights for shear and bending calculations. Knuckle booms as well as fixed-angle jibs are handled. Multiple hooks are provided for.

A nice feature of the Crane Module is the manipulation of graphics to give visual verification of load locations.

Here's the opening dialog of CRANE.WIZCO:

The green button brings up the main setup dialog for defining all the relevant details of geometry, weights, and capacity tables:

A separate capacity table for each hook is provided for:

The Crane Module can create a graphical representation of the boom and quite a few other details as well:

Useful output at a particular condition is presented in the Load Editor:

Several stability criteria are available:

Also available is a table showing results over a range of azimuth angles:

For what it's worth, the Crane Module will draw the locus of the hook at a given boom elevation angle:

It's fun to play with the dialogs and try things out. Just in case documentation is needed, the Crane Module manual is available.

Questions, comments, or requests?
Contact Creative Systems, Inc.

USA phone: 360-385-6212 Fax: 360-385-6213
Office hours: 7:00 am - 4:00 pm Pacific Time, Monday - Friday

Mailing address:
PO Box 1910
Port Townsend, WA 98368 USA

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