What does NOTS stand for?

Naval Ocean Transport Service - Changed to MSTS in 1949 now MSC (DOMA)

Naval Ordnance Test Station

Naval Overseas Transport Service

New Era Dianetics for OTs (SAUS)

NOAA - National Oceanic and Atmospheric Administration Operational Telecommunications System (NOAA)

Norrenberns Truck Service - Common carrier symbol

Nuclear Orbit Transfer Stage (PDAA)