The CRF sector (IPCC 2006) 'domestic navigation' is a transport sector defined by the 2006 IPCC Guidelines for National Greenhouse Gas Inventories: Emissions from fuels used by vessels of all flags that depart and arrive in the same country (exclude fishing, which should be reported under 1 A 4 c iii, and military, which should be reported under 1 A 5 b). Note that this may include journeys of considerable length between two ports in a country (e.g. San Francisco to Honolulu).