The Hull Technician (HT) rating was established in 1972, consolidating the structural metalworking, pipe repair, welding, and damage-control duties previously performed by Shipfitters (SF) and Damage Controlmen (DC). Hull Technicians maintained the ship’s hull, structural fittings, and damage-control systems — work that placed them in continuous contact with asbestos-containing materials in welding, pipe repair, and hull maintenance operations throughout the fleet.

Publicly filed asbestos litigation records document HT exposure across the transition from the Shipfitter/Damage Controlman era into the consolidated HT rate, and through the post-1972 period.

Documented Exposure Sources

Asbestos Welding Blankets

The most consistently documented HT asbestos exposure pathway in the publicly filed record is asbestos welding blankets — fire-resistant blankets placed around and behind hot-work areas to protect adjacent structure, insulation, and personnel during welding and cutting operations. Corpus records specifically address “the use of asbestos blankets” in Navy hot-work applications and document that substitutes for asbestos were developed — confirming that asbestos welding blankets were the standard Navy hot-work protection through the relevant period.

“Used asbestos welding blankets” — publicly filed records documenting HT hot-work practice specifically name asbestos welding blankets as the standard protective material used during welding and burning operations aboard Navy vessels and at shore repair facilities.

Asbestos-Coated Welding Rods

Publicly filed records document asbestos in shielded metal arc welding rod coatings used aboard Navy vessels and in Navy yards: “welding rod coating, so the Navy was…” — establishing the Navy’s use of asbestos-coated welding rods in the relevant period. Welding with these rods generated asbestos-containing fumes and particulates in confined spaces, particularly in enclosed compartments below deck where HTs performed structural and pipe repair welding.

“lding rod salvage around asbestos or asbes[tos]…” — additional corpus reference to welding rod asbestos in the Navy hot-work context.

Hull Insulation Board — Fabrication and Installation

Publicly filed records identify a specific product class — “Navy Hull Insulation Board” — as an asbestos-containing material installed throughout Navy vessel hulls. HTs who fabricated, cut, and installed hull insulation board worked directly with asbestos-containing material: “fabricated asbestos insulation coverings” — deposition testimony from a hull repair worker documenting hands-on contact with asbestos insulation fabrication.

Additional corpus references: “Hull Insulation Board” with “fibrous glass insulation and 1" CELLULAR ASBESTOS” — documenting the asbestos content of hull insulation systems HTs installed and maintained.

Ship Hull Spray Operations in Dry Dock

“Operator spraying ship hull in dry dock” — publicly filed records document HT work on ship hull surfaces in dry dock using spray application methods. Hull treatment, anti-corrosion coating, and related spray operations on vessels in dry dock brought HTs into contact with asbestos-containing coatings and with disturbed insulation on the vessel’s exterior hull surfaces.

Pipe Repair Work

“THE HULL TECHNICIANS, THAT IS THE PIPE” — publicly filed testimony directly associates Hull Technicians with pipe repair work — one of the primary asbestos exposure pathways for any below-deck rating. HTs performing pipe patching, fitting, and repair in engineering spaces and damaged compartments worked with asbestos-containing pipe insulation and asbestos gasket materials as part of their standard repair duties.

“Asbestos, Spiral-Wound (for Navy Flanged Joints)” — publicly filed Navy gasket specification documents the asbestos-containing spiral-wound gaskets used in the flange connections HTs maintained during pipe repair work.

Shore-Based Hull Repair Office

Publicly filed records document a Hull Repair Office with asbestos-related records dated to 1984 — establishing that HT shore-duty assignments at Navy hull repair facilities involved institutional asbestos documentation and, by implication, ongoing asbestos-containing work on vessels undergoing hull maintenance and repair at shore facilities.

Documented Work Activities

Publicly filed asbestos litigation records identify the following HT-specific asbestos-releasing activities:

Welding and burning operations: Hot work in enclosed spaces, with asbestos welding blankets protecting surrounding structure, generated both welding fume exposure from asbestos-coated rods and contact exposure from handling, repositioning, and removing the blankets after use. In confined compartments, fiber release from deteriorating blankets added to the total asbestos burden.

Hull insulation board fabrication: Cutting asbestos-containing hull insulation board to size — using saws and hand tools — released asbestos fibers at close range. HTs fabricating and installing insulation covers in hull voids and structural spaces performed this work routinely, often without respiratory protection.

Pipe patching and emergency repairs: Damage control pipe patching required cutting and fitting asbestos-insulated piping in damaged compartments, working with insulated pipe in spaces where asbestos debris from structural damage was already present.

Dry dock hull operations: Hull maintenance on vessels in dry dock — including spray operations, surface preparation, and structural inspection — brought HTs into close contact with both the vessel’s asbestos-containing hull structure and the dry-dock environment where disturbed insulation from adjacent work was airborne.

Rating History

Shipfitter (SF) performed structural, piping, and hull repair work through the mid-20th century. Damage Controlman (DC) was established in 1948 as a separate rate covering damage control station duties. Hull Technician (HT) consolidated these functions beginning in 1972. Veterans who served in the SF or DC rates prior to 1972 were performing the same work that became the HT rate — their asbestos exposure is equivalent and documented under the same evidentiary framework.

Product Identification Records

Publicly filed product identification and deposition records document:

  • Hull Technicians and [other ratings] aboard ship — confirmed HT rating in publicly filed litigation establishing asbestos exposure aboard Navy vessels
  • “Was an HT, Hull Technician. And what do[es that entail]…” — deposition confirming HT work activities and asbestos exposure context
  • Hull Technician (1972-) — rating history documentation in publicly filed records establishing the 1972 establishment of the consolidated HT rate

The Hull Technician rating qualifies for VA presumptive service connection under 38 CFR § 3.309(d) based on documented below-deck work, hot-work operations with asbestos blankets and rods, and hands-on contact with asbestos-containing hull insulation board and piping materials.

Key documents for an HT claim:

  • DD-214 Block 11 — primary specialty showing HT (or SF/DC for pre-1972 service)
  • Ship assignments — duty stations from DD-214 or NARA muster rolls
  • Diagnosis — mesothelioma, asbestos-related lung cancer, asbestosis, or pleural disease

Civil claims may run against welding blanket manufacturers, welding rod manufacturers, hull insulation board manufacturers (Johns Manville), and gasket manufacturers (Garlock, Flexitallic).

Free, confidential case evaluation: Speak with O’Brien Law Firm — (314) 936-2956

All consultations are free. No fee unless a financial recovery is made on your behalf.

Exposure documentation derived from publicly filed asbestos litigation records including deposition testimony from Navy Hull Technicians, Shipfitters, and related hot-work ratings, and from Navy specification documents for hull insulation materials. This does not constitute legal or medical advice.