Ocean Systems Service Offerings 

 

  Vessel / Simulation Study

 
TOWSIM is a service offered jointly by OSI and Oceanweather (OWI), the creator of a hindcast database depicting global wind and wave conditions every 6 hours. This unique data base on 100+ CDs re-creates the wind and wave climate spanning the past 30+ years. When coupled with OSI's ship routing software, it allows repeated simulation of voyages as if they happened in the past.  This capability allows applications such as:
  • Establishing METOCEAN design criteria for towing of offshore structures
  • Estimating transit times for a new vessel/deployment of a liner shipping company
  • Investigate the effect of sea margin and motion response characteristics on ship performances
  • Unbiased Seastate/Beaufort number determination on past voyages for charter party disputes or insurance claims
  • Estimating fuel consumption for voyage charters

A list of key statistics provided by TOWSIM include:

  • Monthly cumulative probability and probability density functions of Voyage maximum of : Significant Wave Height, Wind Speed, Vessel Motion and voyage Duration.
  • Monthly joint probability density functions of : Sig Wave Height vs Peak Period, Hs vs Wind Speed, Roll vs Pitch, Hs vs Tp for 8 sectors of relative heading to waves.
  • Long-Term prediction of extreme wave height vs number of wave cycles.

Click here to download a TOWSIM brochure;

For detailed technical back ground information, click here to download (5 Mbytes)

Click here for company contact information.

 

Voyage Routes on wind and wave background

 

Wave height cumulative and probability density functions

 

PDF of wind and wave height

 

Joint PDF of Sig Wave Height and Peak Period (Hs-Tp scatter diagram)