How the CASPER Service Works

We utilize traditional noon-reports and/or autologged data. While many people in the 'big data' industry are touting the benefits of high frequency data, 90% of the world fleet still rely on noon-reports.

Our strength is that we use a Digital Twin hydrodynamic model, to ensure that each day's performance data meet the laws of hydrodynamics, with respect to Speed-Power (FOC)-RPM-Weather. Our naval architects then analyze the data and generate a report that provides precise calculations of speed, fuel consumption and resistance in relation to the ship sea trial data (physical model).

For each set of data, we calculate:

  • the propeller thrust
  • speed through water
  • ship resistance, as new, based on calculated speed
  • ship resistance, actual, based on calculated speed
  • added resistance (of hull and propeller) as the difference between #4 and #5 above

All data is fully corrected for wind, waves, swell, sea current, draft/trim, fuel oil quality, water temperature, salinity and other variables. The reported weather from the ship, is cross checked with our direct access to NOAA/NASA metocean data.

The CASPER Service can be initiated on any ship at any time and does not require additional software or equipment.

Each ship is given accurate figures for the speed and fuel penalty due to hull and propeller fouling.

We show you what benefits are attainable by propeller polishing and hull cleaning in terms of reduced fuel consumption or higher service speeds.

We also provide trim guidance tables and compare the ideal trim to daily reported trim, for optimizing practical trim settings.