Trim Optimization

Trim optimization adjusts a ship’s fore-and-aft draft distribution to the trim that minimizes resistance at a given speed and displacement, using CFD-derived or model-tested performance baselines loaded into an onboard tool. The saving is operational and free of capital cost, commonly 1 to 4 percent of fuel, and it is one of the SEEMP Part I measures. Optimal trim shifts with speed and loading, so the benefit depends on disciplined use voyage by voyage rather than a single fixed setting.