On/Off Hire survey is sounding bunker quantity and ship’s condition when the vessel go on/off hire, after that surveyor provide survey report as an evidence about ROB as well as ship’s condition to separate the responsibility of ship’s owner and charterer and protect involved parties’ formal subrogation, usually nominated by ship’s charterer only , ship’s owner only , or by mutual consent.

On/Off Hire survey could be classified into following three as per inspection’s scope: bunker survey, ship’s condition survey and ship’s condition and bunker survey.