帰航

1. Origins, structure, and basic meaning

• Structure: 帰航 (きこう) is a vessel's return to port after a voyage. It appears as completed action and awaited event.
• Basic usage: A research ship returns as scheduled; crew families wait on a pier for the ship.

2. Common pitfalls and similar expressions

• Scheduled vessel return and arrival awaited by families
  • Subject of 帰航した is 調査船; experiencers of 帰航を待つ are families. It is not used for aircraft.