This pre-course Interactive material is part of the Search And Rescue Radio Operators Certificate (SARROC) course and has been developed from the RNLI VHF Radio Guide for Radiotelephony - TRG-5. Upon satisfactory completion of this self-motivating course the candidate should have attained the knowledge necessary to pass the theory assessment. This assessment will be sat during the first day of the SARROC course provided by the RNLI Mobile Training Unit at Station.