Indian Navy Law · Mental Fitness · Criminal Responsibility · Court-Martial Procedure

Navy Act Sections 143–144: Unsoundness of Mind During Trial, Criminal Responsibility, Custody & Retrial

Sections 143 and 144 of the Navy Act, 1957 deal with two legally different mental-condition questions. Section 143 concerns the accused’s present ability to participate in and make a defence during trial. Section 144 concerns criminal responsibility at the time of the alleged offence. The first may interrupt and dissolve the current court martial with a possibility of later retrial; the second may result in an acquittal on the ground of unsoundness of mind, followed in specified circumstances by safe custody and Central Government orders.

Navy Act Sections 143 and 144 are frequently misunderstood because both appear under the statutory heading dealing with “lunacy of accused,” but they perform fundamentally different functions. A person may be mentally fit to stand trial today yet successfully establish that he was legally incapable of criminal responsibility when the act occurred. Conversely, a person may presently be unable to make a defence even though there is no basis to conclude that he lacked criminal responsibility at the time of the alleged offence.

The official statutory text is available through India Code — Navy Act, 1957. The Navy (Discipline and Miscellaneous Provisions) Regulations, 1965 are available through India Code — Navy Regulations.

For connected procedure, see Navy Act Sections 119–123: Sentencing, Member Absence and Dissolution, Navy Act Sections 128–130: Court-Martial Record and Evidence Law, and Navy Act Section 160: JAG(N) Judicial Review.

1. The Navy Act still uses historical terminology

The current text of the Navy Act continues to use expressions such as “insane” and “lunacy.” Those are the words Parliament used in Sections 143 and 144 and they should be quoted accurately when referring to the statute.

Modern legal drafting, however, generally uses expressions such as person of unsound mind, mental illness, fitness to make a defence and criminal responsibility. Using modern explanatory terminology does not alter the statutory test.

2. Section 143: mental incapacity arising during trial

Section 143 applies where, in the course of a court-martial trial, it appears that the accused is insane. The court must then make a special finding regarding that mental condition and order the accused to be kept in strict custody until the directions of the Central Government are known.

The provision therefore does not contemplate simply proceeding with the trial while treating the mental condition as an ordinary evidentiary issue.

3. The practical question under Section 143 is ability to make a defence

Section 143(3) confirms the functional focus. A later trial may be convened when the convening authority considers that the person is capable of making his defence.

That means the issue is not merely whether a psychiatric diagnosis exists. The relevant question is whether the accused can meaningfully participate in the defence process.

4. What does capacity to make a defence involve?

The Navy Act does not provide an exhaustive checklist, but the concept ordinarily requires attention to whether the accused can meaningfully:

• understand the nature of the charge;
• understand that a court martial is determining criminal or disciplinary liability;
• follow the broad course of the proceedings;
• communicate rationally with defending counsel or defending officer;
• give usable instructions about the facts;
• identify witnesses or documents relevant to the defence;
• understand the significance of plea, cross-examination and defence evidence;
• make decisions about giving evidence or making a statement; and
• participate sufficiently to receive a fair trial.

5. A diagnosis is relevant, but diagnosis alone does not answer Section 143

A person may have a diagnosed psychiatric condition yet remain capable of instructing counsel and understanding proceedings. Equally, a person without a previously documented diagnosis may deteriorate to a point where meaningful defence participation is impossible.

The legal inquiry should therefore connect medical material to functional capacity rather than treating the name of a diagnosis as automatically decisive.

6. Section 143 requires a special finding by the court

The statute places the responsibility on the court martial itself. If the issue arises during trial, the court must determine the fact and record the special finding.

A mere administrative note, informal medical opinion, statement by command or private view of a member is not a substitute for the statutory finding required from the court.

7. Medical evidence may become central to the special finding

Although Section 143 does not prescribe a particular medical board in its text, psychiatric and medical evidence will often be indispensable where fitness is genuinely disputed.

Relevant evidence may include:

• psychiatric examination reports;
• medical-board proceedings;
• hospital admission and discharge summaries;
• medication history;
• mental-status examinations;
• observations of counsel and court regarding comprehension and communication;
• service medical records;
• contemporaneous conduct before and during proceedings; and
• expert opinion specifically addressing ability to make a defence.

8. Navy Regulation 95 and medical survey of an accused awaiting trial

Regulation 95 contains a related pre-trial medical mechanism. An accused awaiting trial for a serious offence is not to be medically surveyed with a view to invaliding without special directions of the Chief of the Naval Staff.

The regulation further provides that the Chief of the Naval Staff should not authorise a step resulting in an accused escaping trial merely because of a medical survey unless the surveying officer certifies, among other things, that:

• the accused’s mental condition at the date of the alleged offence was such that he was not responsible for his actions; or
• his physical or mental condition is such that even being tried, apart from any sentence, would be likely permanently to impair his health.

Regulation 95 is not a replacement for Section 143 once the issue arises during an assembled trial. It is a connected medical-administrative safeguard operating in the pre-trial/service-management context.

9. Section 143 is triggered during the trial itself

The words “in the course of the trial by court-martial” matter. Once the trial has commenced, the statutory court—not merely the command chain—must address the mental incapacity issue under Section 143 if it properly arises.

This is one reason why contemporaneous objections and medical applications should be clearly recorded in the minutes.

10. What should defence counsel place on record if fitness deteriorates?

A structured application should ordinarily identify:

• the observed change in the accused’s condition;
• specific examples showing impaired comprehension or communication;
• existing psychiatric diagnosis, if any;
• current medication and side effects;
• recent medical or hospital record;
• why counsel cannot obtain coherent instructions;
• which defence decisions cannot safely be taken;
• the request for appropriate medical assessment; and
• the request that the court address Section 143 before proceeding further.

11. The issue should not be reduced to courtroom appearance

An accused may sit quietly, answer simple questions or appear superficially composed while still being unable to give coherent instructions or understand the consequences of trial choices.

Conversely, unusual behaviour alone does not establish legal incapacity. The court should examine function, medical evidence and the complete circumstances.

12. Section 143 and the right to a meaningful defence

The statutory protection is fundamental to trial fairness. Cross-examination, defence evidence, plea decisions and legal instructions cannot be meaningfully exercised where the accused lacks sufficient capacity to understand and participate.

Proceeding despite genuine incapacity risks converting formal representation into an ineffective defence process.

13. Strict custody after the Section 143 finding

Section 143(1) directs that after the special finding the accused be kept in strict custody in such place and manner as the court considers fit until Central Government directions are known.

The provision is protective and procedural. It is not a sentence of punishment for the charged offence.

14. The report to the convening authority is mandatory

Section 143(2) requires every such case to be reported by the court to the convening authority for orders of the Central Government.

The Central Government may then direct safe custody in such place and manner as it considers fit.

15. Section 123(1)(d): the report under Section 143 dissolves the court martial

Section 123(1)(d) is critically important. It provides that a court martial shall be dissolved on the making of a report under Section 143(2).

Accordingly, once the statutory report is made, the original court does not merely remain adjourned indefinitely waiting for recovery. The court is dissolved by operation of the Navy Act.

For the wider dissolution rules, see Navy Act Sections 119–123.

16. Later recovery does not revive the old court

Section 143(3) provides that when the convening authority later considers the person capable of making his defence, it may take steps to convene a court martial for trial.

This language is consistent with Section 123: recovery does not simply reactivate the dissolved tribunal. A fresh lawful court-martial process must be convened.

17. Section 143 therefore differs from an ordinary adjournment

Issue	Ordinary adjournment	Section 143 route
Court identity	Same court continues	Court dissolved after Section 143(2) report
Reason	Temporary procedural need	Mental incapacity affecting defence
Resumption	Proceed before same court	Fresh court may be convened after fitness returns

18. Cross-service authority: P.C. Kakar and mandatory statutory procedure

In P.C. Kakar v. Commandant, Military Hospital, the Kerala High Court dealt with the Army Act equivalent and held that where abnormal behaviour arose during court-martial proceedings, the statutory lunacy procedure could not simply be bypassed by relying on hospital-management regulations.

The case concerns the Army Act, not the Navy Act, and should therefore be cited comparatively. Its broader procedural point is useful: when the service statute creates a specific mental-incapacity mechanism during court martial, administrative medical procedure should not be used to circumvent it.

19. Section 144 asks a completely different question

Section 144 concerns the accused’s mental state at the time of the alleged offence. It is a criminal-responsibility rule, not a present-fitness rule.

An accused may fully understand the trial today yet still contend that, at the time of the act, unsoundness of mind deprived him of the legal capacity required for criminal responsibility.

20. The Section 144 legal test

An acquittal under Section 144 may arise where, at the time of the alleged offence, by reason of unsoundness of mind, the accused was incapable of:

• knowing the nature of the act alleged; or
• knowing that the act was wrong or contrary to law.

This is a cognitive legal test focused on the accused’s capacity at the crucial time.

21. Section 144 closely mirrors the modern BNS insanity exception

Section 22 of the Bharatiya Nyaya Sanhita, 2023 states that nothing is an offence if, at the time of doing the act, by reason of unsoundness of mind the person was incapable of knowing the nature of the act or that what he was doing was wrong or contrary to law.

The language is materially aligned with the substantive test reflected in Navy Act Section 144. Official text is available through India Code — Bharatiya Nyaya Sanhita, 2023.

22. Medical illness is not automatically legal insanity

Supreme Court authority under the ordinary criminal law draws a distinction between medical insanity and legal insanity. A psychiatric diagnosis, unusual behaviour, emotional instability or intermittent symptoms do not automatically prove that the statutory cognitive test was satisfied at the time of the act.

In Surendra Mishra v. State of Jharkhand, the Supreme Court stressed that the law is concerned with legal insanity: whether the accused, because of unsoundness of mind at the relevant time, lacked the cognitive capacity described by the statutory exception.

The judgment is available at Indian Kanoon — Surendra Mishra v. State of Jharkhand.

23. The crucial time is the time of the alleged act

In Dahyabhai Chhaganbhai Thakker v. State of Gujarat, the Supreme Court explained that the decisive point for an insanity defence is the accused’s state of mind at the time the offence was committed.

Evidence from before, during and after the incident may be used because it can illuminate that crucial mental state, but the legal question remains tied to the time of the act.

The judgment is available at Indian Kanoon — Dahyabhai Chhaganbhai Thakker v. State of Gujarat.

24. What evidence is relevant to a Section 144 defence?

Potentially relevant evidence includes:

• psychiatric treatment immediately before the incident;
• documented psychosis, delusions or cognitive impairment;
• hospital records proximate to the act;
• medication history and compliance;
• expert opinion about likely mental state at the relevant time;
• statements and behaviour immediately before the act;
• conduct during the act;
• conduct immediately after the act;
• attempts to conceal, flee or fabricate, where relevant to awareness of wrongfulness;
• witness observations of mental disturbance; and
• prior episodes sufficiently proximate and similar to illuminate the relevant mental state.

25. Remote diagnosis alone may be insufficient

A diagnosis years before the incident may be relevant but does not necessarily establish the Section 144 test. The defence should build a temporal bridge between the medical condition and the accused’s cognitive capacity at the time of the alleged act.

Likewise, a diagnosis obtained after the incident may be probative if medical evidence explains its relationship to the earlier state, but the later diagnosis cannot simply be treated as conclusive proof of legal incapacity at the time of offence.

26. Burden of proof and the BSA

For proceedings governed by the Bharatiya Sakshya Adhiniyam, 2023, Section 108 places on the accused the burden of proving circumstances bringing the case within a general or special exception and directs the court to presume the absence of those circumstances.

That does not remove the prosecution’s continuing obligation to prove the offence and its necessary mental elements beyond reasonable doubt.

Official BSA text is available through India Code — Bharatiya Sakshya Adhiniyam, 2023.

27. Dahyabhai on the dual burden

Dahyabhai remains important because it explains the interaction between the prosecution burden and the accused’s insanity defence. The prosecution retains the burden of proving the offence beyond reasonable doubt. The accused may establish the insanity exception on the lower standard applicable to the defence, and even evidence falling short of fully proving the exception may still be relevant if it creates reasonable doubt concerning a necessary mental element.

For post-1 July 2024 proceedings, that principle must be read with the BSA and the applicable Navy Act evidentiary framework.

28. Section 144 requires a specific form of finding

Where the accused is acquitted on the ground of unsoundness of mind, Section 144(1) requires the finding to state specifically whether the accused committed the act or not.

This is more precise than a bare “not guilty” finding. The court must distinguish between:

• the accused did not commit the act; and
• the accused committed the act but is acquitted because criminal responsibility was excluded by unsoundness of mind.

29. Why the special finding matters

The answer determines what happens next. If the court finds that the accused committed the act and that the act would have constituted an offence but for the mental incapacity, Section 144(2) requires safe-custody consequences.

If the court finds that the accused did not commit the act, the statutory basis for the Section 144(2) detention route does not arise in the same way.

30. Safe custody after a Section 144 acquittal

Where the accused committed the act but is acquitted because the statutory mental-incapacity test is satisfied, the court martial must, if the act would otherwise have been an offence, order the person to be detained in safe custody in the prescribed place and manner.

The court must then report the action to the officer convening the court.

31. Convening officer and Central Government after Section 144 finding

The convening officer must report the case for orders of the Central Government and take necessary steps to keep the person in safe custody pending those orders.

The Central Government may thereafter order detention in a mental hospital or another suitable place of safe custody.

32. Acquittal by reason of unsoundness is not an ordinary conviction

Section 144 is structured as an acquittal. The safe-custody mechanism follows because the court has found that the act occurred but criminal responsibility was excluded by unsoundness of mind.

The custody is therefore not to be described as a sentence of imprisonment imposed after conviction.

33. Section 143 vs Section 144 — practical comparison

Question	Section 143	Section 144
Relevant time	During trial	At time of alleged offence
Core issue	Capacity to make a defence	Criminal responsibility
Immediate result	Special finding, strict custody, report and dissolution	Acquittal on insanity ground with special finding whether act was committed
Future trial	Fresh court may be convened when capable of defence	No conviction; safe custody may follow if act committed

34. A person can satisfy one provision without satisfying the other

Examples:

• An accused with schizophrenia may be stable and fully able to defend himself at trial, yet the defence may contend that he was in an acute psychotic state at the time of the act. That is principally a Section 144 issue.
• An accused may have been fully responsible at the time of the act but later suffer severe psychiatric deterioration preventing rational participation in trial. That is principally a Section 143 issue.
• An accused may have both present unfitness and a substantive insanity defence. The issues must still be determined separately at the legally appropriate stages.

35. Do not use present competence to disprove past insanity automatically

Recovery by the time of trial does not by itself establish that the accused was criminally responsible at the time of the act. Mental conditions can fluctuate, remit, recur or respond to treatment.

The reverse is also true: a prior episode of mental illness does not automatically establish incapacity at the exact time of the offence.

36. Do not use past diagnosis to prove present unfitness automatically

Section 143 is concerned with present defence capacity. A historic psychiatric diagnosis should therefore be connected to current functional impairment through contemporaneous material.

37. The TJA’s role when mental-incapacity issues arise

The Trial Judge Advocate remains responsible for legal questions and fair conduct of the proceedings. Where Sections 143 or 144 arise, the TJA should ensure that the members understand:

• the distinction between present fitness and past responsibility;
• the exact statutory test;
• the proper role of medical evidence;
• the burden-of-proof principles;
• the form of special finding required; and
• the post-finding consequences prescribed by the Navy Act.

See Navy Act Section 99: Trial Judge Advocate.

38. Section 131 and testimony by an accused with psychiatric illness

If the accused is capable of making a defence and elects to give sworn evidence, Section 131 still governs the voluntary written-request requirement and cross-examination. Psychiatric diagnosis does not remove the statutory protections attached to the decision whether to testify.

See Navy Act Sections 131–137: Accused as Witness and Evidence Rules.

39. BNSS mental-fitness provisions are not a substitute for the Navy Act

Chapter XXVII of the Bharatiya Nagarik Suraksha Sanhita, 2023 contains detailed procedures for accused persons of unsound mind in ordinary criminal courts, including medical examination, treatment and resumption of proceedings.

Those provisions may provide useful comparative context, but a naval court martial is governed by the special procedure in the Navy Act and applicable Regulations. Ordinary criminal-court procedure should not be imported mechanically where the Navy Act has made its own provision.

40. Common errors under Section 143

• Continuing trial despite a properly raised inability to understand or instruct.
• Treating psychiatric diagnosis alone as conclusive of unfitness.
• Treating superficial courtroom composure as conclusive of fitness.
• Failing to obtain or consider relevant medical evidence.
• Failing to make the special finding required by Section 143.
• Treating the Section 143 process as a mere adjournment rather than recognising Section 123(1)(d) dissolution.
• Attempting to revive the old dissolved court after recovery instead of convening a fresh court.

41. Common errors under Section 144

• Equating any psychiatric illness with legal insanity.
• Focusing on diagnosis rather than cognitive capacity at the time of the act.
• Ignoring contemporaneous conduct before, during and after the incident.
• Using present fitness as automatic proof of past responsibility.
• Failing to give the special finding whether the accused committed the act.
• Describing safe custody after an insanity acquittal as punishment following conviction.
• Ignoring the role of BSA Section 108 in a post-2024 proceeding.

42. Documents needed for a Section 143 fitness challenge

• complete court-martial attendance and minutes;
• application raising mental incapacity;
• medical and psychiatric records;
• medication chart;
• hospital admission and discharge papers;
• medical-board or survey proceedings;
• counsel’s recorded difficulty in obtaining instructions;
• TJA advice or ruling;
• special finding of the court;
• Section 143(2) report to convening authority;
• Central Government custody directions;
• dissolution record under Section 123;
• subsequent medical report of restored fitness; and
• fresh convening documents if retrial follows.

43. Documents needed for a Section 144 criminal-responsibility defence

• service medical history;
• psychiatric consultations before the offence;
• hospital records proximate to the incident;
• prescriptions and medication compliance records;
• expert psychiatric opinion addressing the relevant date;
• witness statements describing pre-incident conduct;
• evidence of behaviour at the time of the act;
• post-incident conduct;
• statements or admissions alleged against the accused;
• records of subsequent psychiatric admission;
• TJA summing up on the insanity defence; and
• the court’s special Section 144 finding.

44. Section 143/144 grounds in JAG(N) review

A Section 160 review should identify the exact legal defect rather than merely state that the accused had a psychiatric illness. Potential grounds may include:

• trial continued despite inability to make a defence;
• material medical evidence was excluded or ignored;
• the court failed to make the Section 143 special finding;
• the court failed to dissolve after a Section 143(2) report;
• the TJA misdirected the members by equating diagnosis with legal insanity or by applying an incorrect test;
• the Section 144 defence was assessed at the wrong point in time;
• the court failed to state whether the accused committed the act; or
• post-acquittal custody was ordered outside the statutory sequence.

See Navy Act Section 160: JAG(N) Review.

45. Section 143/144 issues in an AFT appeal

Where conviction remains despite a properly raised mental-responsibility defence, or where trial fairness is affected by present incapacity, the Armed Forces Tribunal may be required to examine the full medical and procedural record in its court-martial appellate jurisdiction under Section 15 of the AFT Act.

A strong appellate ground should identify:

1. the statutory test;
2. the medical evidence;
3. the TJA direction;
4. the court’s finding;
5. the precise procedural or legal error; and
6. how that error affected the fairness or legality of the finding.

For post-trial petition procedure, see Navy Act Sections 162–163.

46. Frequently asked questions

What is Navy Act Section 143?

It deals with an accused who becomes or appears mentally incapable during the course of court-martial trial. The court must make a special finding, order strict custody and report the case for Central Government directions.

Does a Section 143 report dissolve the court martial?

Yes. Section 123(1)(d) expressly provides for dissolution on the making of the report under Section 143(2).

Can the same court simply resume when the accused improves?

The statutory scheme points to a fresh convening. Section 143(3) authorises the convening authority to take steps to convene a court martial once the person is considered capable of making his defence.

Is psychiatric diagnosis alone enough to stop a court martial?

No. The central Section 143 issue is functional capacity to make a defence, assessed on the complete evidence including medical material.

What is Navy Act Section 144?

It deals with acquittal where, at the time of the alleged offence, unsoundness of mind made the accused incapable of knowing the nature of the act or that it was wrong or contrary to law.

What is the difference between Section 143 and Section 144?

Section 143 concerns present trial fitness. Section 144 concerns criminal responsibility at the time of the alleged act.

Can a person be fit for trial but still succeed under Section 144?

Yes. Recovery or stability by the time of trial does not necessarily answer the accused’s mental condition at the time of the offence.

Does every mental illness amount to legal insanity?

No. Supreme Court authority distinguishes medical illness from the legal test of incapacity to know the nature or wrongfulness of the act.

What finding must the court give after an insanity acquittal?

Section 144 requires the court to state specifically whether the accused committed the act alleged.

Can an accused acquitted under Section 144 still be detained?

Yes, where the special finding states that he committed the act and the act would otherwise have constituted an offence, Section 144 provides for safe custody and Central Government orders.

Does BNS Section 22 matter to Navy cases?

It contains the modern general criminal-law unsoundness-of-mind exception in materially similar terms. The Navy Act Section 144 test remains the controlling naval statutory provision for the special court-martial finding.

Conclusion

Sections 143 and 144 protect two different dimensions of fairness in naval criminal justice. Section 143 prevents a court martial from continuing where the accused cannot presently make a meaningful defence and, through Section 123, requires dissolution of the affected court once the statutory report is made. Section 144 ensures that criminal punishment is not imposed where, at the time of the alleged act, unsoundness of mind destroyed the cognitive capacity required for legal responsibility.

For defence and appellate work, the most important discipline is to keep present fitness, medical diagnosis and past criminal responsibility analytically separate. Each issue requires its own evidence, legal test, finding and procedural consequence.