Navy Enlisted Rating Job Descriptions and Qualification Factors

Construction Mechanic (CM)

U.S. 5TH FLEET AREA OF RESPONSIBILITY (April 24, 2012) Construction Mechanic Constructionman Beau Dorenzo, assigned to Assault Craft Unit (ACU) 5, guides a landing craft air cushion ashore. ACU-5 is deployed with the amphibious transport dock ship USS New Orleans (LPD 18). New Orleans and embarked 11th Marine Expeditionary Unit (11th MEU) are deployed as part of the Makin Island Amphibious Ready Group, supporting maritime security operations and theater security cooperation efforts in the U.S. 5th Fleet area of responsibility.
U.S. Navy / Mass Communication Specialist 2nd Class Dominique Pineiro

Construction Mechanics repair and maintain heavy construction and automotive equipment including, buses, dump trucks, bulldozers, rollers, cranes, backhoes, pile drivers, and tactical vehicles. CMs also prepare detailed maintenance records and cost control data and acquire parts.

The duties performed by CMs include:

  • diagnosing and troubleshooting equipment failures;
  • repairing and maintaining diesel and gasoline engines;
  • adjusting and repairing ignition, fuel, electrical, hydraulic and steering systems;
  • maintaining and repairing chassis, frames and bodies;
  • working with hoisting and jacking equipment, power tools, measuring instruments, gauges and meters;
  • lubricating equipment;
  • maintaining and repairing tires, batteries, brakes and valves;
  • performing shop management functions such as maintenance scheduling and spare parts inventory control;
  • making estimates of material, labor, and equipment requirements.

Working Environment

Many construction mechanics perform in an automotive garage environment, while some work in the field to maintain equipment. People in this rating usually work closely with others under close supervision and perform both physical and mental tasks. Their many different duties may be performed in climates ranging from tropical to arctic.

A-School (Job School) Information

  • Port Hueneme, CA -- 89 calendar days
  • Port Huenema, CA -- 68 caldendar days

After completion of "A" school, people in this rating can expect assignment to a Naval Mobile Construction Battalion (NMCB) in Port Hueneme, CA or Gulfport, MS, or to an Amphibious Construction Battalion (ACB) in San Diego, CA or Little Creek, VA. NMCBs operate on a rotating basis, averaging seven months in home port and seven months deployed to overseas locations such as Spain, Puerto Rico or Guam.

Seabees receive additional specialized combat and construction skills training during home port duty.

ASVAB Score Requirement: AR + MC + AS = 158

Security Clearance Requirement: None

Other Requirements

60 month enlistment obligation

Sub-Specialties Available for This Rating: None

Current Manning Levels for This Rating: CREO Listing

Note: Advancement ( promotion ) opportunity and career progression are directly linked to a rating's manning level (i.e., personnel in undermanned ratings have greater promotion opportunity than those in overmanned ratings).

Sea/Shore Rotation for This Rating

  • First Sea Tour: 54 months
  • First Shore Tour: 36 months
  • Second Sea Tour: 54 months
  • Second Shore Tour: 36 months
  • Third Sea Tour: 42 months
  • Third Shore Tour: 36 months
  • Fourth Sea Tour: 36 months
  • Forth Shore Tour: 36 months

Note: Sea tours and shore tours for sailors that have completed four sea tours will be 36 months at sea followed by 36 months ashore until retirement.

Much of the above information courtesy of the Navy Personnel Command