You have asked for information on the UTILITIESMAN rating. The rating symbol is a Large Industrial Valve
The U.S. Navy is made up of four distinct groups of technical rating specialist. These categories are:
Administrative and Medical
Aviation
Hull
Construction
The term SEABEE was originally coined to define the Naval combat construction forces assigned to the Naval Civil Engineering Corps, and the SEABEES became a recognized organization in 1942. The traditional SEABEE specialty ratings are made up of seven classifications shown as the top left seven on the home page. As SEABEES tend to be self sufficient in a combat zone or other deployed area, other ratings are assigned to the SEABEES to provide the skills necessary to accomplish this.
While any rating within the U.S. Navy can be billeted with a SEABEE group depending upon the nature of the task at hand, the home page includes thirteen typical other ratings that were most assigned to be part of a SEABEE unit during the Vietnam Era.
Utilitiesman (UT):
UTs plan, supervise and perform tasks involved in the installation, operation, maintenance and repair of plumbing, heating, steam, compressed air and fuel storage and distribution systems, air conditioning and refrigerator equipment and sewage collecting and disposal facilities.