外湾

1. Origins, structure, and basic meaning

• Structure: 外湾 is read as がいわん and means “outer bay”.
• Basic usage: The examples show a rougher outer bay and waters surveyed by a research vessel.

2. Common pitfalls and similar expressions

• Distinguishing senses and uses
  • It is the seaward or entrance-side part of a bay and contrasts with more enclosed, often calmer 内湾.