Template:USN helicopters

v • d • e USN helicopter designations pre-1962

Helicopter, Anti-submarine	Bell: HSL Sikorsky: HSS

Helicopter, Crane	McDonnell: HCH

Helicopter, Observation	Hiller: HOE Gyrodyne: HOG Kaman: HOK Sikorsky: HOS • HO2S • HO3S • HO4S • HO5S

Helicopter, Trainer pre-1948	Sikorsky: HNS

Helicopter, Trainer 1948-1962	Hiller: HTE Kaman: HTK Bell: HTL

Helicopter, Transport 1944-1962	Boeing Vertol: HRB McDonnell: HRH Piasecki: HRP Sikorsky: HRS • HR2S • HR3S

Helicopter, Utility pre-1949	Douglas: HJD McDonnell: HJH Piasecki: HJP Sikorsky: HJS

Helicopter, Utility 1950-1962	Kaman: HUK • HU2K Bell: HUL McCulloch: HUM Piasecki: HUP Sikorsky: HUS • HU2S