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Navy Enlisted Rating (Job) Descriptions and Qualification Factors

Hull Technician (HT)

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HTs do the metal work necessary to keep all types of shipboard structures and surfaces in good condition. They also maintain shipboard plumbing and marine sanitation systems, repair small boats, operate and maintain ballast control systems, and manage the Quality Assurance Program.

The duties performed by HTs include:

  • installing, maintaining and repairing valves, piping, plumbing system fittings and fixtures, and marine sanitation systems.
  • repairing decks, structures and hulls by welding, brazing, riveting and caulking;
  • examining, testing welds and various shipboard structures; using radiological, ultrasonic and magnetic particle testing equipment.
  • fabricating with light and heavy gauge metal such as aluminum, stainless steel, sheet copper and brass, steel, sheet and corrugated iron;
  • heat treating, hot and cold forming of metals;
  • pipe cutting, threading and assembly;
  • repairing installed ventilation ducting;
  • repairing metal, wood and fiberglass boats;
  • installing and repairing insulation and lagging;
  • operating marine sanitation systems

Working Environment

Hull Technicians work in a variety of situations at sea and ashore. Sometimes their work is performed indoors in a shop environment. Other times it may be performed outdoors, frequently at sea and in all kinds of climates and weather conditions. They may work in noisy environments on some assignments. USN HT's are stationed primarily aboard USN deploying ships, Full Time Support (FTS) HT's are stationed aboard Naval Reserve Force (NRF) ships that deploy or conduct local operations

A-School (Job School) Information

Great Lakes, IL -- 8 weeks

ASVAB Score Requirement: VE + AR + MK + AS = 200 or MK + AS + AO = 150

Security Clearance Requirement: Secret

Other Requirements

Normal hearing required. Frequencies: 3000hz 4000hz 5000hz 6000hz Average hearing threshold level in these four frequencies must be less than 30db, with no level greater than 45db in any one frequency. If hearing level exceeds these limits, the applicant is enlistment ineligible for the rating.

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

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: 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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