Joel S Meltzner

US Patent:

8643509, Feb 4, 2014

Filed:

Jan 31, 2011

Appl. No.:

13/017192

Inventors:

Henry Chen - San Francisco CA, US
Jonathan David Elkin - Tiburon CA, US
Lang Deng - Castro Valley CA, US
Willie Z. Cheng - San Francisco CA, US
Philip J. Ballou - Alameda CA, US
John R. Murk - El Cerrito CA, US
Joel S. Meltzner - Littleton CO, US

Assignee:

The Boeing Company - Chicago IL

International Classification:

G08B 23/00
B63B 25/08
B63B 25/24
B63B 39/14
B63B 43/04

US Classification:

340984, 114 74 R, 340440

Abstract:

A method is described for providing an alert when the motion of a ship indicates a potential of sloshing damage from liquid cargo being transported by the ship. The method includes calculating, with a processing device, a natural period for the tanks holding the liquid cargo based on the configuration and fill levels of the tanks, receiving, at the processing device, data describing the actual or predicted motion of the ship with respect to three orthogonal axes, determining, with the processing device, a proximity of the natural period of the tanks to a period defined by the actual or predicted motion of the ship, and providing an alert to a user if the proximity in periods is within a threshold value.