The Naval Perito as a Witness Expert in International Arbitration (ICC/LCIA/LMAA)

1. The Rol of the Expert Witness in the Maritime Arbitration

In international maritime arbitration, expert witness (expert witness) It’s not a technical mere that issues a report. It’s a Assistant to the arbitral tribunal, whose function is to help arbitrators (usually non-technical) understand complex issues of naval engineering, navigation, construction or valuation of maritime assets. His primary duty is not with the party that hires him, but with the technical truth and the court.

This distinction is fundamental and makes the difference between an elite expert and a mediocre expert. The experienced referees detect in minutes if an expert is defending a preconceived posture or is offering an independent and rigorous technical opinion.

1.1. Party-Appointed Expert vs. Joint Expert

In international arbitral practice, there are two main forms of expertise:

• Party-Appointed Expert (Party Perito): Designated and paid by one of the parties. It is the most common model in maritime arbitration, especially in LMAA and SMA. Although he is hired on the one hand, his duty of independence to the court is absolute.
• Joint Expert: Designated jointly by both parties or appointed directly by the court. It is more common in British jurisdictions under the Rule 35 of the Civil Procedure Rules (CPR)where the court can impose a unique expert on specific technical issues.

1.2. The Independence Duty: Beyond Theory

La. IBA Rules on the Taking of Evidence in International Arbitration (Art. 5) states that the report of the expert must contain a declaration of independence. But independence is not just a signature on a role: it is demonstrated by:

• Absence of prior or recurring commercial relations with the party designating it.
• Explicit recognition of technical points favourable to the opposite party (not concealing them).
• Transparent and replicable methodology.
• Ability to modify conclusions if new technical data justify it.

2. The Major Maritime Arbitration Forums of the World

Not all maritime arbitrations are the same. Each forum has its own procedural culture, its rules of evidence and its expectations about the role of the expert. An international expert must dominate these differences to be effective.

2.1. LMAA (London Maritime Arbitrators Association)

London is the world capital of maritime arbitration. Approximately 80% of charterparty and bills of lading contracts include LMAA arbitration clauses. Key features:

• British Terminology: Reports must be written in British legal English, with quotations to cases from the High Court (Queen’s Bench Division – Commercial Court).
• Cross-examination Culture: The British barristers are masters in disassembling experts through whitish questions. The expert must be prepared for 2-4 hours intensive sessions.
• MALA Terms (2021): Specific procedural rules that regulate the presentation of expert evidence, including the obligation of “without prejudice meetings” between experts on the part to identify points of agreement.

2.2. SMA (Society of Maritime Arbitrators) – New York

American maritime arbitration has its centre in New York. Key differences regarding AML:

• Increased procedural flexibility: SMA arbitrators have more discretion in the admission of evidence.
• Depositions: The practice of pre-trial depositives is common, where the experts are interrogated under oath.
• More pragmatic approach: Less formalism than in London, but more emphasis on the practical experience of the expert.

2.3. ICC (International Chamber of Commerce)

The International Court of Arbitration of ITC is the preferred forum for disputes Naval construction (newbuilding contracts) and major operations of M strangerA maritime. Features:

• School courts: Generally 3 referees, which multiplies the need for pedagogical clarity in the reports.
• Terms of Reference: Initial document that strictly defines issues to be resolved, including technical expertise.
• Case conferences: Experts may be summoned to preliminary conferences to delimit points of agreement before the final hearing.

2.4. LCIA, London Court of International Arbitration

Although not exclusively maritime, the LCIA manages a growing volume of complex nautical disputes, especially in insurance and reassurance. Its approach is similar to that of LMAA but with its own procedural rules (LCIA Rules 2020).

3. Preparation of the Pericial Report “Litigation-Ready”

An expert report for international arbitration is not a simple technical report. You must meet specific standards that do. admissible, defendable and persuasive before an arbitral tribunal.

3.1. Structure required by the Tribunals

Any expert elite report must contain at least:

1. Declaration of Independence and Veracity: According to the IBA Rules Art. 5.2.
2. Qualifications of Perito: Detailed CV, certifications (SAMS, NAMS, IIMS), prior experience as an expert witness (including cases where testified).
3. Instructions Received: Verbatim or detailed summary of the instructions of the party designating it.
4. Scope of Opinion: What has been asked to say and, crucially, what has not been asked of you.
5. Fáctic Base: Revised documents, inspections carried out, interviews maintained.
6. Methodology: Detailed explanation of the technical methods used, with references to international standards (ISO, IMO, classification company standards).
7. Opinions: Numerous and clearly differentiated from the facts.
8. Limitations and Qualifications: Explicit recognition of the limitations of the analysis.
9. Conclusions: Direct responses to the issues raised.
10. Annexes: Geolocalized photographs, planes, laboratory results, calculations.

3.2. The “Joint Statement of Experts”

After the exchange of expert reports, the court usually orders a expert meeting (without prejudice) para identificar:

• Puntos de acuerdo técnico (matters agreed).
• Puntos de desacuerdo técnico (matters disagreed).
• Razones del desacuerdo.

El resultado es un Joint Statement firmado por ambos peritos que delimita las cuestiones que el tribunal deberá resolver en el hearing. Un perito hábil utiliza esta fase para consolidar acuerdos y aislar los desaciertos técnicos de la parte contraria.

4. El Cross-Examination: Defendiendo el Informe en Sala

El cross-examination es el momento de la verdad para cualquier perito. Un informe brillante puede ser destruido por un perito que no sabe defenderlo oralmente. Y un informe mediocre puede sobrevivir si el perito es hábil bajo presión.

4.1. Las Técnicas de los Barristers Británicos

Los barristers de Londres (especialmente los de chambers marítimas como 20 Essex Street, Quadrant Chambers o 7 King’s Bench Walk) son los maestros mundiales del cross-examination de peritos. Sus técnicas incluyen:

• La pregunta en embudo: Comienzan con preguntas amplias para que el perito se comprometa, y luego estrechan progresivamente hasta acorralarlo en una contradicción.
• El documento sorpresa: Presentan un documento que contradice el informe, esperando que el perito pierda la compostura.
• La pregunta hipotética: “Si le demostrara que X es falso, ¿cambiaría su opinión?” Buscan que el perito admita que su opinión es condicional.
• La repetición obsesiva: Repiten la misma pregunta hasta que el perito se contradice o pierde paciencia.

4.2. Cómo Preparar al Perito para el Cross

En Prop Trust Verified, preparamos a nuestros peritos con sesiones de moot cross-examination donde simulamos el hearing. Enseñamos las reglas de oro:

1. Nunca apresurarse a responder: Hacer una pausa de 3-5 segundos antes de cada respuesta.
2. Responder solo a lo preguntado: No divagar, no justificar, no explicar más de lo necesario.
3. No temer decir “no lo sé”: Es preferible admitir ignorancia que especular.
4. Mantener la calma: El cross-examination es un ejercicio psicológico tanto como técnico.
5. Pedir ver el documento: Nunca responder sobre un documento sin haberlo leído completamente.
6. Distinguir entre hechos y opiniones: Los hechos son incontrovertibles; las opiniones son defendibles con metodología.

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