A spar is a deep-draft float — moored, not made to travel.
A spar is a tall cylindrical hull floating deep and upright, moored over a deepwater field. Like other moored production units, it floats without being built to move — and courts have often treated that kind of structure as a work platform rather than a vessel.
Is a spar platform a vessel, and am I a Jones Act seaman on it?
It is contested. A spar is a deep-draft float that is moored in place and not made to move under its own power, so courts have often treated it as more like a fixed platform than a vessel. That classification decides whether you are a Jones Act seaman or a worker under OCSLA and the Longshore Act, and it can be litigated on the specific facts.
Key takeaways
- Whether a spar platform is a vessel is genuinely contested.
- The answer decides between Jones Act seaman status and OCSLA/Longshore coverage.
- Courts look at whether it is practically capable of maritime transportation.
- Your actual duties and time aboard often drive the result.
- Because the stakes are high, the classification is worth litigating carefully.
A deep-draft cylinder, moored on station.
A spar platform is a large-diameter, deep-draft cylindrical hull that floats upright, kept on station by a spread of mooring lines anchored to the seabed. Its deep draft makes it very stable, and it carries a full production deck above the water. Spars produce oil and gas in some of the deepest parts of the Gulf.
Production, maintenance, construction, and specialty crews work a spar — and which workforce a worker belonged to is what drives the legal analysis when someone is hurt.
The injuries this work produces.
A spar's hazards are those of a deepwater production plant: hydrocarbon releases, fires and explosions, hydrogen-sulfide and chemical exposure, falls from height, dropped objects, crush, and crane and lifting incidents — plus the transfer and marine hazards of working a structure in open water. Many serious injuries on these units also involve a vessel alongside, which can open a separate and more valuable claim.
Moored production — often not a vessel.
Under Stewart v. Dutra Construction Co., 543 U.S. 481 (2005), and Lozman v. City of Riviera Beach, 568 U.S. 115 (2013), a structure is a “vessel” only if it is practically capable of being used to transport people or things over water. A production unit moored on station and not built to travel often fails that test.
Courts — the Fifth Circuit in particular — have frequently treated permanently moored floating production units as work platforms rather than vessels, which generally means the worker is not a Jones Act seaman.
When the unit isn't a vessel, the claim usually runs under OCSLA and borrowed adjacent-state law, or the LHWCA — including the Chapter 95 shield the defense will try to raise in Texas.
If a vessel alongside — a crew boat, a construction or derrick vessel — caused the injury, a § 905(b) claim may still exist, and the Sieracki doctrine can reach unseaworthiness for some workers who are neither seamen nor LHWCA-covered.
Because the analysis is fact-specific and the case law keeps developing, the vessel question on a moored floating unit is worth contesting directly rather than conceding.
Courts have frequently treated a deep-draft moored production unit like a work platform, not a ship — which can push the case into OCSLA.
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Text (713) 489-2297We've litigated the classification fight.
Doyle Dennis Avery tries the cases where classification is the battle. In our Chapter 95 platform case, the defense's Chapter 95 gambit on a Gulf structure was defeated; in our foreign-employer jurisdiction case, a ninety-foot fall on a Gulf platform was pursued to recovery against a foreign employer.
On a fixed structure, the most valuable early work is identifying every party — including any vessel involved — whose negligence contributed, because that is what determines whether the case is boxed into Chapter 95 or not.
What the other side will argue — and how it’s met.
A spar is a floating production platform, and the defense will argue it is a fixed facility outside maritime law and that Chapter 95 applies.
On a fixed platform the defense reaches for Texas Chapter 95, a statute written to protect property owners from their contractors’ work. It has real exceptions — for the operator’s control over the work and its actual knowledge of the danger — and the firm has defeated exactly that gambit on an OCS structure. See OCSLA & Chapter 95.
For floating, movable units the defense argues the structure is a fixed facility outside maritime law. Vessel status is a fact question — a structure practically capable of maritime transportation is a vessel — and winning it brings the Jones Act and unseaworthy doctrine to bear instead of a narrower premises regime.
The Jones Act uses pure comparative negligence, so a worker’s own fault reduces a recovery but never bars it — and the hazard is usually the company’s. In one case the firm tried, a jury found the injured worker zero percent at fault.
A worker does not need to prove unseaworthiness to win. Employer negligence under the Jones Act stands on its own — a jury can find negligence even where it does not find the vessel unseaworthy.
A spar case lives on the classification line.
A spar floats on a deep-draft hull, moored in place over a field — so whether maritime law or a platform regime governs is genuinely contested and fact-specific. The firm litigates that line directly: where a platform regime is argued, it answers Chapter 95 by proving the operator’s control and knowledge, having defeated that exact gambit on a spar; where vessel arguments are available, it pursues the Jones Act and unseaworthy claims. Either way it reconstructs the production or equipment failure with a safety expert.
On a spar, the first battle is which body of law governs — and the firm has won that fight on a spar before.
What to protect while it still exists.
The classification facts, the safety records, and the work contracts all matter and are held by the operator.
The spar’s operating facts, safety records, permits, and the contracts that show who controlled the work and knew of the danger drive both the classification and the liability fight.
Tell a supervisor and make sure a written incident report is created. For a serious injury the vessel must also file a Coast Guard marine-casualty report (Form CG‑2692); a missing report is itself evidence of a safety failure.
See a doctor promptly and describe exactly how the injury happened to every provider. An honest, contemporaneous record is the backbone of the case.
You are not required to give the insurer a recorded statement, and early “I’m okay” remarks get used against you. Assume you may be watched, and get advice before signing.
Frequently asked questions about a spar platform injury claims
Is a spar platform a vessel?
It is contested. A spar is a deep-draft float that is moored in place and not made to move under its own power, which has led many courts to treat it as more like a fixed platform than a vessel, though the question is fact-specific.
Am I a Jones Act seaman on a spar platform?
It depends on the classification and your actual duties. If it is treated as a vessel and you have a substantial connection to it, you may be a seaman; if it is treated as a fixed structure, you likely fall under OCSLA and the Longshore Act.
What is the test for whether something is a vessel?
Courts ask whether the structure is practically capable of being used as a means of transportation on water. Something built to move, such as a drillship or supply vessel, usually qualifies; something fixed to the seabed or permanently moored in place usually does not.
Why does the classification matter so much?
Because a Jones Act seaman and an OCSLA or Longshore worker have very different remedies. The same injury can lead to a very different recovery depending on how the structure is classified.
Do I have to prove fault?
Not entirely. Under the Jones Act you need only show the employer's negligence played some part, however slight, which is a very worker-friendly standard. An unseaworthiness claim requires no negligence at all, only that the vessel or its equipment was not reasonably fit. Maintenance and cure is owed to a seaman regardless of fault.
What can I recover after an injury on a spar platform?
Recovery is measured by category rather than a fixed amount: past and future medical care, lost wages and lost earning capacity, pain and suffering, and maintenance and cure for a seaman. The total depends on the facts, so no honest lawyer can promise a number up front.
What should you do after an injury on a spar platform?
Get medical care and make sure the injury is reported in writing. Preserve evidence early, including incident reports, photos, equipment, and witness names, and do not give a recorded statement or sign anything before talking to a lawyer.
What happens when you text us
Tell us what happened — in your own words, as much or as little as you want.
We review it free. You learn whether maritime law protects you and what your options actually are.
You decide. Nothing is filed, and no one contacts your employer, unless you choose to move forward.
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Reach out even if…
- You think the accident was partly your fault — under the Jones Act, your own fault reduces a recovery but does not bar it.
- You already gave a statement or signed something — a release signed under pressure can be challenged.
- You still work for the company — talking to a lawyer is confidential, and retaliation for pursuing a claim can itself be actionable.
- You’re not sure your case is “big enough” — that’s exactly what a free review is for.
What you were working on shapes your claim.
Doyle Dennis Avery LLP represents offshore workers injured on drillships, semi-submersibles, jack-ups, FPSOs, platforms, and the supply, service, and construction vessels that serve them. Tell us what you were on and what happened — a case review costs nothing, and there is no obligation.
This page is general information, not legal advice, and does not create an attorney-client relationship. Whether the Jones Act, OCSLA and borrowed state law, the LHWCA/§ 905(b), or the general maritime law applies depends on the specific facts, including whether the structure is a vessel and whether a vessel caused the injury. Prior results do not guarantee or predict a similar outcome. Doyle Dennis Avery LLP · Houston, Texas. This is attorney advertising.
