| Navaid Facility ID: | IMR |
| Official Navaid Facility ID: | IMR |
| Navaid Facility Type: | NDB |
| Navaid Name: | Marshfield |
| City: | MARSHFIELD |
| State: | MASSACHUSETTS |
| FAA Region: | |
| Latitude: | 42-05-52.826N (42.098) |
| Longitude: | 070-40-32.850W (-70.6758) |
| Lat/Long Survey Accuracy: | 1 second or better |
| Owner: | STATE OF MASSACHUSETTS |
| Operator: | STATE OF MASSACHUSETTS |
| Common System Usage: | Yes |
| Public Use: | Yes |
| Navaid Class: | MHW |
| Hours of Operation: | 24 |
| Magnetic Variance: | 14.1 W as of 6/8/2025 |
| ARTCC High Altitude ID (Name): | ZBW (BOSTON) |
| ARTCC Low Altitude ID (Name): | ZBW (BOSTON) |
| Navaid ID | Navaid Facility Type | Remarks |
|---|---|---|
| IMR | NDB | NDB LCTD 800 FT INBOUND OF APCH END RY 06; 550 F NW OF CNTRLN. |
| IMR | NDB | NDB UNMON. |