Asbestos Exposure at the Philadelphia Naval Shipyard

By David Meldofsky, California-licensed attorney · Founder, Lawsuit Informer

Last updated: June 6, 2026

The Philadelphia Naval Shipyard was one of the largest and most active naval shipyards in the United States, and for generations the people who built and overhauled ships there worked around asbestos every day — often without knowing it. This page explains, in plain terms, how and where exposure happened at the yard, who was affected, the illnesses linked to it, and why that history can still matter today.

About the Philadelphia Naval Shipyard

Often described as the first naval shipyard in the United States, the Philadelphia Naval Shipyard traces its roots to early shipbuilding along the Delaware River and became an official U.S. Navy site in 1801. As the original Southwark facility was outgrown, the yard moved to a much larger site on League Island, at the confluence of the Delaware and Schuylkill rivers, where operations were consolidated by the 1870s.

The yard reached its peak during World War II, when roughly 40,000 people worked around the clock — building 53 warships and repairing well over 1,000 more. It continued building and overhauling vessels through the postwar decades before the Navy ended operations there in the 1990s under the federal Base Realignment and Closure (BRAC) process; the site has since been redeveloped as a commercial complex. Through the decades when the yard was most active, asbestos was a standard shipbuilding material, which is why so many of the people who worked there were exposed.

Why Asbestos Was Present

Philadelphia's exposure history has two distinct chapters. The first was wartime construction, when the yard built 53 warships and repaired over a thousand more, with asbestos going into every boiler, steam line, gasket, and insulated compartment. The second chapter may have been worse: for decades after the war, Philadelphia worked primarily as an overhaul yard, and overhaul means tearing out old, dry, friable insulation, work that releases far more dust than installing new material. For the general background, see asbestos exposure in shipyards and naval service.

Where Exposure May Have Happened

The overhaul era concentrated exposure in predictable places:

• Dry docks during major overhauls, when machinery spaces were opened up and stripped
• The carrier Service Life Extension Program of the 1980s, which gutted and rebuilt 1950s-era carriers still full of their original asbestos
• Boiler and machinery spaces during rip-out, the dustiest single job in a shipyard
• The yard's pipe, boiler, and machine shops, where contaminated components were rebuilt
• Berths and piers where ships sat through long availabilities with work ongoing
• Wartime building ways during the construction years

Overhaul work also meant ships' crews often remained aboard or nearby while their vessel was torn apart, putting sailors in the dust alongside yard workers.

Who May Have Been Exposed

Roughly 40,000 people worked the yard at its WWII peak, and a substantial workforce remained through the overhaul decades until closure in the 1990s. Those most exposed included:

• Rip-out and lagging crews, including insulators removing decades-old material
• Boilermakers and pipefitters and steamfitters rebuilding propulsion plants
• Machinists, welders, electricians, and shipfitters working the same opened spaces
• Ships' force sailors aboard during overhauls and SLEP availabilities

Family members exposed through dust carried home on work clothes are also part of the yard's exposure pattern.

Illnesses Linked to the Exposure

Because Philadelphia's exposure window runs so late, into the 1980s and 1990s, its related diagnoses of mesothelioma (pleural and peritoneal), asbestos-related lung cancer, and asbestosis are still working through the latency period today.

Why This History Can Matter in a Claim

Philadelphia offers claimants two practical advantages. First, the venue: the Philadelphia Court of Common Pleas runs one of the country's longest-standing coordinated asbestos programs, and yard-related claims have moved through it for decades, leaving a deep evidentiary record of the materials and conditions involved. Second, the timeline: because heavy overhaul work continued into the 1990s, the yard's exposure window is decades more recent than most navy yards, and diagnoses from that era are only now maturing.

What starts the filing clock is the diagnosis, not the decades-old exposure, and each state sets its own deadline. If you are researching on behalf of yourself or a family member, our companion directory can connect you with Pennsylvania asbestos lawyers who handle these matters, and you can also see who may qualify for an asbestos claim.

Records That Can Help

For the later decades, records are often better than people expect. Civilian Department of Defense employment files, Navy records showing which ship a sailor was aboard during which overhaul availability, and Philadelphia union local records can all place a person in the yard during specific work. The SLEP carriers in particular have well-documented overhaul schedules. Job titles, dates, ships, and shops all help; see records that help support an asbestos claim.

Common Questions

I worked SLEP overhauls in the 1980s. Is that recent enough to matter?

It may be the opposite: 1980s exposure is now 40-plus years old, squarely inside the typical latency window, and diagnoses from that work are surfacing now. The filing clock generally starts at diagnosis.

Was overhaul work really worse than building ships?

Often, yes. New insulation was installed wet or in finished form, while rip-out meant breaking apart dry, decades-old material in enclosed spaces. Removal work consistently produced the heaviest dust.

I was ship's crew during an overhaul, not a yard employee. Does this apply to me?

Yes. Crews frequently lived and stood watch aboard or beside their ships during availabilities, sharing the same air as the yard workers stripping the machinery spaces.

Related Pages

About the Author

David Meldofsky is a California-licensed attorney and the founder of Lawsuit Informer, an educational platform focused on helping people understand lawsuits, consumer safety issues, and legal rights related to defective products and toxic exposures.

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Last Updated: June 10, 2026

Educational information only. Not legal advice. No attorney-client relationship is formed.