Maritime Jurisdiction: What Counts as Navigable Waters

Whether maritime law applies to your injury is not decided by how far from shore you were. It is decided by jurisdiction: whether the incident occurred on navigable waters and bears a connection to maritime activity. That single question can change your deadline, your court, and what you are allowed to recover, which is why it is usually the first fight in a maritime case.

What Are Navigable Waters?

Under the test American courts have used since the 19th century, a waterway is navigable if it can serve as a continued highway for interstate or foreign commerce. The Gulf of Mexico, the Houston Ship Channel, and the Mississippi River qualify. A landlocked lake that sits entirely within one state generally does not. The test is about the waterway’s capacity for commerce, not what you were doing on it, which is why maritime law can apply even to recreational vessels on navigable water.

State Court or Federal Court? The Saving to Suitors Clause

Admiralty jurisdiction belongs to the federal courts under 28 U.S.C. § 1333, but the same statute contains the “saving to suitors” clause, which preserves an injured worker’s right to pursue most maritime claims in state court. State courts hearing those claims must still apply federal maritime law.

Where Maritime Cases Get Heard
The forum is a strategic choice, and it usually belongs to the worker.
State Court (Saving to Suitors)
Most maritime injury claims, including Jones Act cases, can be filed in state court with a jury. A Jones Act claim filed in state court generally cannot be removed to federal court by the defendant. The worker often picks the forum.
Federal Admiralty Court Only
A few actions belong exclusively to federal admiralty court: maritime liens, ship mortgage foreclosures, limitation of liability proceedings, and suits against the vessel itself.

For an injured seaman, this choice is strategic. Where a case is heard affects the jury pool, the schedule, and sometimes the outcome. It is one of the first decisions we make in every case, and one of the reasons experience in Harris County, Galveston County, and the Southern District of Texas matters.

How Far Out Does U.S. Law Reach?

How Far U.S. Maritime Law Reaches
Distance from shore changes the law, not the protection.
Inland & coastal navigable waters
Rivers, channels, and bays that carry commerce, including the Houston Ship Channel. General maritime law and the Jones Act apply to vessels here.
Beyond 3 nautical miles: DOHSA
The Death on the High Seas Act governs wrongful death this far out and limits recovery to pecuniary losses.
12 nautical miles: the territorial sea
The outer edge of U.S. sovereign waters. American maritime law protects American workers well beyond it.
The Outer Continental Shelf: OCSLA
Platforms attached to the seabed take the adjacent state’s law with them, including its deadlines: 2 years off Texas.
Foreign waters
A seaman working for an American company on an American vessel may have Jones Act rights anywhere in the world.

Get the Jurisdiction Question Answered Early

Companies exploit jurisdictional confusion. They classify workers to avoid the Jones Act, argue for forums that favor them, and run out clocks while workers sort out which law applies. If you were hurt on or near the water anywhere in the Gulf, have a Houston maritime lawyer answer the jurisdiction question before the company answers it for you. 

Contact Us

Get Started with a Free Consultation

  • Please enter your first name.
  • Please enter your last name.
  • This isn't a valid email address.
    Please enter your email address.
  • This isn't a valid phone number.
    Please enter your phone number.
  • Please make a selection.
  • Please make a selection.
  • Please enter a message.