KEY TAKEAWAYS
A Jones Act vessel is any watercraft that is practically capable of transportation on water and is in navigation, which covers trawlers, longliners, scallopers, lobster boats, tugboats, barges, cruise ships, dinner cruise and sightseeing boats, ferries, tankers, freighters, and dredges. Self-propulsion is not required, and neither is size, tonnage, or time spent at sea. Structures permanently fixed to the seabed or withdrawn from navigation for long-term repair generally fall outside the definition, which is often the first thing a vessel owner disputes after an injury.

A vessel qualifies for Jones Act purposes if it is a watercraft or other artificial contrivance that is practically capable of being used as a means of transportation on water, and if it is in navigation at the time of the injury. That definition is deliberately broad.
The experienced maritime injury attorneys at Hofmann & Schweitzer break down how it captures almost every commercial boat working the waters of New York and New Jersey, from a 40-foot lobster boat to a container ship.
Table of Contents
What Does “Vessel in Navigation” Actually Mean?
Three elements have to line up. Each one is worth understanding, because vessel owners contest all three.
Practically Capable of Transportation on Water
The craft must be able to carry people or things across water as a practical matter, not merely in theory. A hull that floats and moves under tow satisfies this test. Since a 2005 Supreme Court decision, self-propulsion is no longer required, which brought dredges, jack-up rigs, spud barges, and floating work platforms squarely inside the definition.
In Navigation
A vessel is in navigation when it is afloat, in operation, and capable of moving. A boat tied up between trips, laid up for the season, or undergoing routine repair is still in navigation. A vessel taken out of service for a multi-year rebuild, or one that has been permanently moored and stripped of its ability to move, generally is not.
On Navigable Waters
Navigable waters are those usable for interstate or foreign commerce. The Atlantic, New York Harbor, the Hudson and East Rivers, Raritan Bay, Long Island Sound, and the coastal waters off New Jersey all qualify.
Which Commercial Fishing Vessels Qualify?
Essentially all of them. Crews working the North Atlantic fisheries are seamen, and the boats they work are Jones Act vessels, including:
- Otter trawlers and draggers pulling bottom gear for groundfish, fluke, and squid
- Scallopers towing dredges, where cable tension, A-frames, and haulback gear create the most serious dredge deck injuries
- Longliners setting pelagic or demersal main lines for tuna, swordfish, and groundfish
- Lobster boats and crab boats hauling traps and pots
- Clam and oyster dredge boats working sorting tables and cages
- Gillnetters, seiners, and charter and party fishing boats carrying paying passengers
- Fish tender vessels and at-sea fish processing vessels
The Coast Guard draws similar lines in its safety rules for commercial fishing industry vessels, which separately define fishing vessels, fish tender vessels, and fish processing vessels. A crewman hurt aboard a trawler is in the same legal position as a deckhand on a freighter.
What Other Commercial Vessels Qualify?
The Jones Act reaches well beyond fishing. Vessels that routinely qualify include:
- Tugboats and towing vessels, where crews face allisions, line failures, and struck-by injuries
- Deck barges, tank barges, and spud barges used in marine construction
- Cruise ships, where nearly all shipboard staff, including hospitality and entertainment personnel, qualify as crew members
- Dinner cruise boats, sightseeing and harbor tour vessels, and water taxis
- Passenger and vehicle ferries, including the Staten Island Ferry and NYC Ferry fleets
- Tankers, freighters, container ships, bulk carriers, and coastal cargo vessels
- Hopper and cutterhead dredges, where dredging crews work alongside heavy moving equipment
- Offshore supply boats, crew transfer vessels, and research vessels
Which Structures Do Not Qualify?
A structure that is fixed to the seabed and never intended to move, such as a permanent oil platform, a pier, or a wharf, is not a vessel. Neither is a floating structure that has been permanently taken out of navigation, such as a moored casino boat or a hull converted into a stationary restaurant. Workers injured on those structures are not shut out of compensation, but their claims usually arise under the Longshore and Harbor Workers' Compensation Act or state law instead.
Congress also treats uninspected commercial fishing industry vessels as a distinct category under Chapter 45 of Title 46, which sets minimum safety equipment and stability standards for fishing boats.
Why the Vessel Question Decides the Case
Whether a boat qualifies is often the first thing an employer or its insurer contests, because a finding that the craft was not a vessel in navigation eliminates seaman status and with it the right to sue for negligence, the unseaworthiness claim, and maintenance and cure. The dispute usually turns on facts: whether the hull was afloat and operable, what work the crew performed, how the craft was documented, and whether it moved under its own power or under tow.
Documentation matters here. Coast Guard certificates of documentation, state registration, insurance declarations, fishery permits, and even the vessel's own logbook can settle the question. Those records are far easier to obtain in the weeks after an injury than a year later.