Coastal Forces of the Royal New Zealand Navy

Coastal Forces was a division of the Royal Navy established during World War II. It consisted of small coastal defence craft such as motor launches, submarine chasers, air-sea rescue launches, motor gun boats and motor torpedo boats. It did not include minesweepers, naval trawlers or landing craft. This article is about the equivalent boats used in the Royal New Zealand Navy (RNZN).

From 1921 until 1941 the New Zealand Navy was a Division of the Royal Navy. The RNZN was not created until 1 October 1941. Within six months of its creation the RNZN commissioned twelve Class B Fairmiles and sixteen Harbour Defence Motor Launches (HDMLs)