First 3 HOK-1 (OH-43D) Huskie were delivered in 1953. Operational service began in 1956
BuNos 125528 - 125531 (4)
BuNos 129800 - 129842 (43)
BuNos 138098 - 138102 (5)
BuNos 139971 - 140001 (31)
BuNos 125528 - 125531 (4)
BuNos 129800 - 129842 (43)
BuNos 138098 - 138102 (5)
BuNos 139971 - 140001 (31)
Units
| 1956-1965 | Marine Observation Squadron 2VMO-2 |
| 1956-1962 | Marine Medium Helicopter Squadron 263HMM-263 |
| 1956-1962 | Marine Heavy Helicopter Squadron 362HMH-362 |
| 1953-1956 | Marine Helicopter Squadron 1HMX-1 |
| ??-1964 | Marine Observation Squadron 1VMO-1 |