1. IMO (2005) Development of an E-Navigation strategy to MSC 81/23/10
2. IMO (2008) Report to the maritime safety committee to NAV 53/22
3. IMO (2014) Draft e-navigation Strategy Implementation Plan to NCSR 1/28
4. Oltmann J-H (2013) The structure of the maritime service Portfolio(s) (MSPs). Wasserstraßen-undSchifffahrtsverwaltung de-sBundes, pp 1–22
5. IMO (2017) Develop guidance on definition and harmonization of the format and structure of maritime service portfolios (MSPs) to NCSR 5/8