ocean-going; foreign voyage; outward voyage
Refers to ships or voyages that travel on international routes, as opposed to domestic (内航). Often used in compounds like 外航船 (ocean-going vessel).
See also: 内航
An ocean-going vessel entered the port.
外航と内航では必要な免許が異なる。
The required licenses differ between ocean-going and domestic shipping.
Compound of 外 (outside, foreign) and 航 (navigation, voyage).