Blue water, brown water
Blue water, brown water, and the 12-mile line.
The words sound like slang. In the VA system they were, for fifty years, the difference between a presumption and a denial. Brown water means the inland waterways — the rivers, canals, deltas and inner harbors of Vietnam, where the Navy's small craft worked in water the color of the land. Blue water means the open sea offshore, where the carriers, cruisers and auxiliaries steamed. The Agent Orange presumption covered the men ashore and the men on the rivers. The men on the blue water — anchored within sight of the coast, drinking distilled seawater, breathing the same coast air — were told the presumption stopped at the waterline. This page is how that line was drawn, defended, and finally broken.
What this means for your claim
The geography fight is over. What remains is paperwork.
If you served offshore of Vietnam during the war — or your father did — three checks decide most claims now, and every one of them is a document: the classification line (does the service fall inside the presumption as the law stands today?), the VA ships list (is your ship named, and in which category?), and the deck logs (where did the ship actually sit, day by day?). The 12-mile line replaced an argument with a measurement: it can be checked against a deck log in an afternoon. Start with the evidence kit, and take the file to free accredited help before you file.
The line is drawn — and upheld
The VA's herbicide regulation presumed exposure for veterans who served in Vietnam — and the VA read “Vietnam” to end at its shoreline. Sailors who never set foot ashore, including men who served in Da Nang Harbor itself, were outside the presumption and had to prove individual exposure, which for a sailor offshore was effectively unprovable. In 2008, the Federal Circuit upheld that reading in Haas v. Peake: the VA's exclusion of offshore service stood. For the next eleven years, the line at the waterline was the law, and blue water claims were denied on geography alone.
January 29, 2019 — Procopio breaks the line
Alfred Procopio Jr. served aboard USS INTREPID off Vietnam. On January 29, 2019, the Federal Circuit, sitting en banc, decided Procopio v. Wilkie in his favor: the phrase “the Republic of Vietnam” in the herbicide statute includes its territorial seas. Haas was overruled. The presumption went offshore by judicial decision — as, in this series, it so often has had to.
June 25, 2019 — Congress finishes it
Congress codified and completed the work with the Blue Water Navy Vietnam Veterans Act of 2019 (Pub. L. 116-23, signed June 25, 2019; the presumption took effect January 1, 2020). Its rule is drawn in distance instead of shoreline: veterans who served within 12 nautical miles of the demarcation line of Vietnam are presumed exposed to herbicides, on the same terms as those who served ashore. The same Act extended the presumption to veterans who served at or near the Korean DMZ (September 1, 1967 – August 31, 1971). The PACT Act later widened the map again — Thailand bases, Laos, Cambodia at Mimot or Krek, Guam and American Samoa with their territorial waters, and Johnston Atoll — ending the waterline argument in places it had never even been litigated.
The ships list — Categories I through IV, in plain terms
To work the offshore cases, the VA maintains a list of Navy and Coast Guard vessels associated with Agent Orange exposure, organized in categories. In plain terms:
Category I — Inland waterways. Ships that operated primarily or exclusively on Vietnam's inland waterways. These are the brown water ships proper; their crews are presumed exposed.
Category II — Inland waterways and piers, temporarily. Ships that operated temporarily on the inland waterways, or that docked to a pier or shore in Vietnam. For those periods, their crews are presumed exposed.
Category III — Docked, with men going ashore. Ships that docked to shore, or operated in close coastal waters for extended periods, putting crew ashore or sending smaller boats in. Crew members who went ashore are presumed exposed.
Category IV — Close coastal waters, anchored offshore. Ships that operated on Vietnam's close coastal waters for extended periods, including large tenders and transports riding at anchor. Veterans who went ashore — typically by smaller craft — are presumed exposed; others must show their exposure on the facts.
Beyond the four categories, the VA's list carries further vessels assessed case by case. Inclusion on the list is not the only road to the presumption — deck logs, personnel records and the 12-mile rule decide many claims — but a ship's presence on it is the government's own documentation, and it is worth checking before filing anything. This hub works the list at the evidence page, and the line itself at the classification page.
The worked example — one radioman
USS ARIKARA (ATF-98), a fleet ocean tug, appears on the VA's Agent Orange ships list twice — once in Category II and once in Category III:
Category II: in August 1966, ARIKARA conducted salvage operations on the Saigon River — inland water, brown water.
Category III: from September to December 1969, ARIKARA docked to piers at Da Nang. Her radioman, Thomas Alan Bowman Sr., served his Da Nang harbor tour aboard her from December 1969 to February 1970.
His own account of that tour — the work, the water, the gear — is at The Radioman. The VA conceded his herbicide exposure in January 2020 — fifty years after the harbor, on a record that had been in the government's files the whole time. His presumptive cancers were granted at 100 percent in 2022 and 2023. He died on October 31, 2026.
Why the line mattered — and still does
Draw the presumption at a waterline and you have decided, without ever saying so, that thousands of men will spend their last decades assembling proof the government knows they cannot assemble. The 12-mile line replaced that with a measurement. If you served offshore of Vietnam during the war — or your father did — check the ships list, check the deck logs, and check whether the ship crossed the line.
Served on the blue water? Tell your story — and bring the ship's name. The full investigation is at DearDougCollins.com.
Information from one family's documented case. Not legal advice.