The purpose of NVIC 01-09, Change 1 is to provide additional guidance for vessel owners or operators as well as manufacturers of any shipboard sewage processing equipment, including facilities that test shipboard sewage and related processing equipment, to voluntarily request U.S. Coast Guard certification of compliance with international sewage regulations in Annex IV to MARPOL 73/78.
Source: USCG
Link: 9/6/2018: Change 1 to NVIC 01-09, Voluntary Compliance with International Sewage Regulations