Patent ID: 7367464
Filing Date: 2008-05-06
Classification: B66C,Y10S

Abstract:
1. A system for use in association with a rotary boom crane situated onboard a ship and capable of hoisting a payload, said crane including a boom, a payload hoist line, a rider block, a rider block lift line, a left rider block tagline, and a right rider block tagline, said apparatus comprising: a ship motion sensor for measuring the motion of said ship; a payload swing sensor for measuring the pendulation of said payload; plural crane geometry sensors including: a slew angle sensor for measuring the slew angle and slew-angular rotation rate of said boom; a luff angle sensor for measuring the luff angle and luff-angular rotation rate of said boom; a payload hoist line sensor for measuring the length and rate-of-change-of-length of said payload hoist line; a rider block lift line sensor for measuring the length and rate-of-change-of-length of said rider block lift line; a left rider block tagline sensor for measuring the length and rate-of-change-of-length of said left rider block tagline; a right rider block tagline sensor for measuring the length and rate-of-change-of-length of said right rider block tagline; a computer program product for residence in the memory of a computer, said computer program product comprising a computer-useable medium having computer program logic recorded thereon, said computer program logic including: