What does HAMS stand for?

Hardness Assurance, Maintenance and Surveillance (SAUO)

Hardness Assurance Monitoring System (MCD)

Headquarters and Maintenance Squad

Headquarters and Maintenance Squadron (SAUS)

High Altitude Mapping System (ACAE)

Hour Angle of the Mean Sun - Navigation

Massawa - Ethiopia - ICAO location identifier (ICLI)

Smithfield Companies - NASDAQ symbol (SAG)