Page 37: of Maritime Reporter Magazine (July 2017)

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How it Works all directions,” said Kusters, “from folks tureWaves, they are braced for a strong technology,” says Kusters, “we expect

At the core of the FutureWaves sys- involved in offshore construction, pro- pull from industry. They are managing the same from the commercial side. We tem are several key enabling technolo- duction, and logistics support. Again, it strong interest from offshore oil and re- can envision a future where this technol- gies developed by GD-APS. The ? rst comes back to enhanced safety of op- newables, and starting to engage with ogy is a vital component of the naviga- is a customized X-band Doppler radar erations, and expanding the operating the cruise and commercial shipping in- tion tool suite expected on every ship’s capable of sensing inbound ocean wave envelope.” While GD-APS is just now dustries. “As the Navy continues to pull bridge.” motions out to ranges approaching 5 km. engaging the commercial market for Fu- for ever-expanding applications of this

The radar’s azimuthal sweep rate and range resolution are set to adequately sample the local wave? eld in space and

Innovation | Safety | Performance time. Doppler scans are fed into a suite of real-time ? ltering and processing al- gorithms that translate the radar data

STATUTORY COMPLIANCE FOR TANKERS into forecasts of surface wave elevation maps and ship hull forces. The radar-to- wave processing scheme uses an innova- tive least squares inversion to determine the underlying propagating components of the wave ? eld, and these waves are evolved forward in time according to ocean wave propagation physics. A pre- calculated database of wave interaction forces with the ship is used to produce a


TM rapid prediction of the ship’s motion that

TM & CargoMax will be induced by the predicted wave forcing. These continuously updating ship motion predictions can then be used to inform the timing of ship operations.


Although maximum forecast time var-


CargoMax systems with the Direct Damage Stability ies with sea condition and vessel speed, option have been approved by IACS Classifcation the FutureWaves system has been dem-

Societies for decades. Meet the new IMO MARPOL, IBC, onstrated to provide accurate, phase-re-

BC, GC & IGC requirements for mandatory verifcation solved wave and ship motion forecasts to instruments onboard new and existing tankers. several minutes into the future.

The system also produces a directional power spectrum of the ocean waves, a map of where the wave energy is com- ing from and at what wave period. This wave spectrum data is fed to the ship motion model to produce a plot of the statistical representation of the ship mo- tions as a function of ship heading and speed, allowing selection of ship orien- tation to minimize particular modes of motion. This planning tool is continu- ously updated from the radar-calculated directional power spectrum, and can also be fed wave spectrum forecast products STOCK (Purchase and Rental): s

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