Damage location system for a tanker ship
This patent describes a ship having a plurality of liquid cargo tanks, a method for locating a point of impact due to collision with an object. It comprises: mounting a hydrophone array in each one of the plurality of cargo tanks; detecting with the hydrophone arrays, average ambient noise transients and impulsive shock waves; measuring the relative times of first arrival of the impulsive shock waves at each the hydrophone; calculating the differences in the times of first arrival of the impulsive shock waves at the two hydrophones of any two selected pairs of hydrophones; from the calculated shock wave arrival time differences defining two lines of constant shock wave first arrival time difference with respect to the two hydrophones corresponding to each the selected pair of hydrophones; and fixing the point of impact at the point of intersection of the two lines of constant shock wave arrival time difference.
- Assignee:
- NOV; NOV-91-024022; EDB-91-158595
- Patent Number(s):
- US 5018113; A
- Application Number:
- PPN: US 7-545571
- OSTI ID:
- 5114988
- Resource Relation:
- Patent File Date: 29 Jun 1990
- Country of Publication:
- United States
- Language:
- English
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