Navy Enlisted Rating (Job) Descriptions and Qualification Factors

Builder (BU)

Builders make up the largest segment of the Naval Construction Force. They work as carpenters, plasterers, roofers, concrete finishers, masons, painters, bricklayers, and cabinet makers.

The duties performed by BUs include:

  • building and repairing wood, masonry concrete, and steel structures;
  • installing interior finish work, including installing sheet rock, paneling or ceramic tile walls and installing ceiling and floor tile, millwork and trim;
  • operating carpentry, cabinet-making, and tool and equipment repair shops;
  • building forms for concrete construction;
  • mixing, placing and finishing concrete;
  • operating concrete batch plants, portable concrete mixers and other concrete finishing equipment and tools;
  • building wharves, bridges and other heavy timber structures;
  • reading and interpreting blueprints and preparing sketches for projects;
  • making estimates of material, labor, and equipment requirements.

Working Environment

BU's may work in a variety of conditions, independently or as members of a large team. Their many different duties may be performed in climates ranging from tropical to arctic.

A-School (Job School) Information

Gulfport, MS -- 75 calendar 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, Okinawa, Puerto Rico or Guam. Seabees receive additional specialized combat and construction skills training during home port duty.

ASVAB Score Requirement: AR + MC + AS = 140

Security Clearance Requirement: None

Other Requirements

60 month enlistment obligation

Sub-Specialties Available for This Rating: Navy Enlisted Classification Codes for BU

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: 46 months
  • Second Shore Tour: 36 months
  • Third Sea Tour: 36 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

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