Mayport, Florida Courts-Martial, 2013–2018: What 97 Cases Show
Mayport, Florida had 97 courts-martial in these records from 2013 to 2018. Of the contested cases that reached a verdict, 15 of 30 ended in a full acquittal (50%), a little higher than the 46% Navy and Marine Corps figure.
Understanding Trends in Military Practice · 6 min read
Trends › By Installation › Mayport, Florida › 2013–2018
Short answer: Mayport, Florida had 97 courts-martial in these records from 2013 to 2018. Of the contested cases that reached a verdict, 15 of 30 ended in a full acquittal (50%), a little higher than the 46% Navy and Marine Corps figure. Article 120c (indecent recording and exposure) was charged in 10% of cases, compared with 4% elsewhere in the service.
Contested Cases Often Ended in Full Acquittal
A case is contested when the accused pleads not guilty to at least one charge, alone or together with guilty pleas to other charges. Of the 30 contested cases that reached a verdict here, 15 ended in a full acquittal. That rate, 50%, is a little higher than the 46% for the whole Navy and Marine Corps.
Another 4 cases ended in a partial acquittal. In those cases, the accused was acquitted of at least one charge or specification and convicted of another.
Pleas in 93 Records
The plea is recorded in 93 of the 97 cases: 63 guilty pleas and 30 not-guilty or mixed pleas. The contested share was 32%, compared with 29% across the Navy and Marine Corps.
Guilty pleas differed by charge. Cases charging Article 121 (larceny) ended in a guilty plea 92% of the time (12 of 13). Cases charging Article 120 (rape and sexual assault) ended in a guilty plea 43% of the time (9 of 21). The records do not show why an accused pleaded guilty or contested the charges.
What Was Charged
Charges are listed for 92 of 97 cases, and each article counts once per case. Article 128 (assault) was the most common charge, in 34% of cases, about the same as the 37% service share. Article 112a drug charges and Article 120 each appeared in 23% of cases, about the same as the service figures.
Other articles differed more. Article 120c (indecent recording and exposure) appeared in 10% of cases here, compared with 4% service-wide. Article 92 (orders violation) appeared in 9%, compared with 15%.
| UCMJ Article | Cases | Share here | Share, the whole Navy and Marine Corps docket |
|---|---|---|---|
| Art. 128 Assault | 31 | 34% | 37% |
| Art. 112a Wrongful use, possession of controlled substances | 21 | 23% | 23% |
| Art. 120 Rape and sexual assault | 21 | 23% | 22% |
| Art. 121 Larceny | 14 | 15% | 13% |
| Art. 134 General article | 11 | 12% | 13% |
| Art. 120c Other sexual misconduct | 9 | 10% | 4% |
| Art. 107 False official statements | 9 | 10% | 12% |
| Art. 92 Failure to obey order or regulation | 8 | 9% | 15% |
Convictions by Charge
All 14 cases charging Article 121 ended in a larceny conviction. Article 120 had the lowest conviction rate among the most common charges: 15 convictions on that article in 21 cases (71%). Article 128 had 27 of 31 (87%), and Article 112a had 18 of 21 (86%).
Article 120 convictions also had the longest median confinement, 2.5 years. The median for Article 121 was 5 months. A single case can include a conviction on one article and an acquittal on another, so these rows overlap.
| Article | Cases charging it | Convicted of it (share) | Median confinement when convicted of it |
|---|---|---|---|
| Art. 128 Assault | 31 | 27 (87%) | 8 months |
| Art. 112a Wrongful use, possession of controlled substances | 21 | 18 (86%) | 6 months |
| Art. 120 Rape and sexual assault | 21 | 15 (71%) | 2.5 years |
| Art. 121 Larceny | 14 | 14 (100%) | 5 months |
How Much Confinement?
Confinement was adjudged in 90% of the 82 convictions. The median confinement was 6 months, the same as the 6 months median for the rest of the Navy and Marine Corps. A quarter of the confinement sentences were 1.2 years or longer. These are adjudged sentences, before any plea-agreement cap, clemency, or appeal, and each covers all charges in a case.
Sentences longer than one year were 20 of 82 convictions (24%), about the same as the 26% service share.
| Adjudged confinement | Convictions | Share here | Share, the Navy and Marine Corps as a whole |
|---|---|---|---|
| No confinement | 8 | 10% | 12% |
| Under 6 months | 31 | 38% | 39% |
| 6 months to 1 year | 23 | 28% | 23% |
| More than 1 year, under 5 years | 12 | 15% | 18% |
| 5 years or more | 8 | 10% | 9% |
General and Special Courts-Martial
A general court-martial can impose any lawful sentence. General courts-martial were 47 of the 97 cases (48%), compared with 44% service-wide. In those cases, 95% of convictions included confinement, with a median of 1.5 years.
A special court-martial cannot impose more than one year of confinement or a dishonorable discharge. At the 50 special courts-martial, 87% of convictions included confinement, with a median of 3 months.
Punitive Discharges and Rank
Of 79 enlisted members convicted, 53 received a bad-conduct or dishonorable discharge (67%). That is a little higher than the 64% service figure. Of those 53, 17 were dishonorable discharges. Of 2 convicted officers or warrant officers, 1 was sentenced to dismissal, the officer equivalent of a punitive discharge. A sentence without a punitive discharge can still be followed by an administrative separation.
There were more NCOs (E-5 to E-9) than junior enlisted members here: 48 compared with 44. There were also 4 officers or warrant officers. Across the Navy and Marine Corps, junior enlisted members were 56% of the accused, so this group was more senior.
Yokosuka and Pearl Harbor
Yokosuka, Japan (96 cases) and Pearl Harbor, Hawaii (83) tried a similar number of cases. All 3 installations had a median confinement of 6 months. At Yokosuka, 14 of 34 contested cases ended in a full acquittal, and the punitive discharge rate was 65%. At Pearl Harbor, 9 of 26 ended in a full acquittal, and the rate was 75%.
| Installation | Cases | Contested | Full acquittals (decided contested) | Median confinement | Punitive discharge (enlisted) |
|---|---|---|---|---|---|
| Mayport, Florida | 97 | 32% | 15 of 30 | 6 months | 67% |
| Yokosuka, Japan | 96 | 36% | 14 of 34 | 6 months | 65% |
| Pearl Harbor, Hawaii | 83 | 31% | 9 of 26 | 6 months | 75% |
What the Records Leave Out
Mayport had 13 cases in 2013, 21 in 2014, 11 in 2015, 27 in 2016, 16 in 2017, and 9 in 2018. That is about 5% of the 2,059 Navy and Marine Corps cases in those years. All were tried before the Military Justice Act of 2016 took effect on January 1, 2019. The records do not include the evidence, the plea terms, or anything handled by nonjudicial punishment or administrative separation.
Dates and sources for the law changes mentioned here: UCMJ change timeline.
How We Counted
Every court-martial in the data tried at Mayport, Florida with a trial date in 2013–2018 (97 cases), compared with all 2,059 Navy and Marine Corps trials in those years. Dates are trial dates.
Source: public court-martial records (Article 140a, UCMJ) in Military Trial Results, data updated October 24, 2026. Definitions, sources, and known gaps: how this data was built. Errors: content@bodiesburied.com.
Related Analysis
- Mayport, Florida: Court-Martial Data and Trends (hub)
- Navy-Marine Corps Courts-Martial: Data and Trends (hub)
- By Installation (hub)
- Inside 69 Courts-Martial at Mayport, Florida, 2019–2023 (another period)
- Mayport, Florida, 2024–2026: Charges, Verdicts, and Sentences in 15 Cases (another period)
- Yokosuka, Japan, 2013–2018: Charges, Verdicts, and Sentences in 96 Cases (same years, similar size)
- What Was Tried at Pearl Harbor, Hawaii, 2013–2018? 83 Courts-Martial (same years, similar size)
- Article 128 at Mayport, Florida Before and After 2019
- Did General Article Cases at Mayport, Florida Change After 2020?
- Search every case in Military Trial Results (members)
About the author. Jocelyn C. Stewart is a retired Army JAG with more than 24 years of trying courts-martial and more than 200 jury trials. She hosts Where All The Bodies Are Buried and runs the Law Office of Jocelyn C. Stewart. This analysis is for education and information only. It is not legal advice, and every case is different.