Arrival condition (sea trial)

The arrival condition for a sea trial is the standard loading state the ship is brought to for the speed and power runs, usually the design or ballast draft and trim stipulated in the trial agreement, with fuel, water, and stores accounted for so the actual displacement is known. ISO 15016:2015 corrects measured speed and power back to the contractual draft and trim when the trial condition deviates, so the surveyed arrival drafts feed the deadweight and displacement used in the speed/power analysis. Tanks are sounded and a draft survey is taken before the runs to fix the displacement on which the corrected results depend.