noun, noun or participle which takes 'suru', intransitive verb
stowing away; smuggling oneself; clandestine travel abroad
Refers to secretly boarding a ship, plane, or other vehicle to travel illegally, often across borders. Can be used as a noun or with する to describe the act.
彼は貨物船に密航して日本に入国した。
He stowed away on a cargo ship and entered Japan.
密航が発
Their stowing away was discovered, and they were deported.