Los Angeles

9th Circuit Upholds Captain’s Conviction In Conception Fire

AI Assisted Icon
Published on March 04, 2026
9th Circuit Upholds Captain’s Conviction In Conception FireSource: Unsplash/Grant Durr

The captain of the Conception dive boat, where a 2019 fire off the Channel Islands killed 34 people, has lost his latest bid to overturn his conviction. A federal appeals panel on Tuesday upheld the manslaughter conviction of Jerry Nehl Boylan, who was found guilty by a jury in November 2023 and later sentenced to four years in prison. Boylan has remained free while appealing, but the ruling keeps intact a landmark case that grew out of one of California’s deadliest peacetime maritime disasters.

What the appeals court said

According to Justia, the Ninth Circuit panel, in an opinion by Judge John B. Owens, affirmed Boylan’s conviction under 18 U.S.C. § 1115 and held that the statute does not require proof of “gross negligence.” The court said any fuzziness in the jury instructions, including the use of the term “misconduct,” was harmless because the trial judge repeatedly framed the case as one involving gross negligence and the record contained overwhelming evidence. The opinion leaves in place both the jury’s verdict and the legal rationale that supported it.

Evidence that swayed the jury

At trial, prosecutors highlighted long-standing safety failures aboard the Conception, including the lack of a required overnight roving watch, inadequate fire drills, and ignored certificate-of-inspection rules that they said allowed a fire to grow unchecked. Trial testimony described crew members running past a 50-foot fire hose while passengers slept below, and detailed how Boylan called a mayday at 3:14 a.m. and then jumped overboard as the vessel burned, according to the Los Angeles Times. The jury convicted Boylan in November 2023 after a two-week trial, and a federal judge sentenced him to four years in prison in May 2024, according to AP.

Families respond

Relatives of those killed said the appeals decision brought a measure of relief after years of legal back-and-forth. “The original conviction for seaman’s manslaughter of 34 people was the correct verdict and it has been reaffirmed,” said Maggie Strom, whose husband Ted died on the Conception. Other family members told the Los Angeles Times they hope the ruling sends a clear message to vessel operators about basic safety precautions.

Regulatory fallout and safety changes

The disaster set off an intensive federal investigation and a wave of safety recommendations. The National Transportation Safety Board concluded that the probable cause was Truth Aquatics’ failure to provide effective oversight, including not maintaining the required roving patrol, and it urged steps such as interconnected smoke detectors, unobstructed secondary escape routes and mandatory safety-management systems, according to the NTSB’s investigation. Congress also pushed changes into law, with lawmakers inserting a Small Passenger Vessel Safety provision into the annual defense bill to tighten escape and alarm standards for small overnight passenger vessels, according to a press release from Rep. Julia Brownley.

Legal takeaway

From a legal standpoint, the Ninth Circuit’s opinion narrows a key defense argument by concluding that the statute’s mens rea standard is negligence rather than an elevated gross-negligence threshold, and it found that the strength of the evidence made any flaws in the jury instructions immaterial. Commentators noted that while the majority described the proof as “overwhelming,” one judge wrote separately to question parts of the reasoning, a split that could influence how future cases are argued. As Law360 observed, that tonal divide between the majority and the concurrence may figure in any attempt to seek further review.

What comes next

Boylan still has procedural options, including asking the full Ninth Circuit to rehear the case or petitioning the U.S. Supreme Court for review, though both paths are uncertain and rarely successful. Local reporting noted that Boylan was allowed to remain free on bond after his 2024 sentencing while his appeal played out, a status that will change only if the courts order him to surrender. For now, the ruling closes a long-running legal chapter while keeping attention on how aggressively the post-Conception safety reforms are enforced on the water.