Answer
A –
What has changed-
Loaded or ballast
Fuel quality - LCV
Fouling due to long anchorage
Weather conditions.
Trim of the Propeller.
1.Compare Slip to rule out external weather conditions.
2.Take Performance and compare SFOC with seatrial report. 3.Compare Load diagram from last Voyage performance report. 4.Compare LCV of last Voyage fuel.