noun
fast ship; high-speed vessel
Refers to a ship or boat designed for high speed, often used in contexts like ferries, express boats, or racing vessels.
この快速船は島まで30分で着きます。
This fast ship reaches the island in 30 minutes.
Compound of 快速 (high speed) + 船 (ship). The exact historical derivation is uncertain, but the word is transparently formed from these components.