The course is an optional element of the DPO training programme and can be done straight after the Simulator Course, but the participant is required to do a minimum of 30 DP sea time days onboard a classed DP vessel and have the Statement of Suitability signed by the Master after the course. A company confirmation letter is also required for verification of that DP sea time. The Sea Time Reduction training cannot be used for upgrading a certificate from Limited to Unlimited.