Navy Dads

Hull Maintenance Technician HT
Hull Maintenance Technicians are responsible for maintaining ships' hulls,fittings, piping systems and machinery. They install and maintain all shipboard and shore based plumbing and piping systems. They look after a vessel's safety and survival equipment and perform many tasks related to damage control.


Hull Technician (HT's) 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.


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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


Security Clearance Requirement: Secret


Other Requirements

  • Must have normal color perception
  • Must have normal hearing (see below)
  • Must be a U.S. Citizen

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.


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.


** Note: The Navy has announced a merger of the DC, HT, and MR ratings into Repair Technician (RT), but the merger is pending as no timeline has been announced.







101220-N-8040H-059 PACIFIC OCEAN (Dec. 20, 2010) Hull Maintenance Technician Fireman Apprentice Anthony Fleeman grinds off safety hazards in the hangar bay aboard the aircraft carrier USS Carl Vinson (CVN 70). Carl Vinson and Carrier Air Wing (CVW) 17 are on a three-week composite training unit exercise to be followed by a deployment to the U.S. 7th and U.S. 5th Fleet areas of responsibility. (U.S. Navy photo by Mass Communication Specialist Seaman Christopher K. Hwang/Released)







101204-N-0173G-029 PACIFIC OCEAN (Dec. 1, 2010) Hull Maintenance Technician Fireman John Stull makes his way through a smoke-filled compartment during a general quarters drill aboard the aircraft carrier USS George Washington (CVN 73). George Washington is participating in Keen Sword 2011, a scheduled joint exercise with the Japan Maritime Self-Defense Force through Dec. 10. (U.S. Navy photo by Mass Communication Specialist Seaman William P. Gatlin/Released)





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