Royal Navy Officer Selection (AIB): Complete 2026 Guide

The Admiralty Interview Board (AIB) is the Royal Navy's central selection process for every candidate seeking a commission as an officer — whether in the Warfare, Engineering, Logistics, Fleet Air Arm, or Medical branches. It is the single gateway between application and officer training at Britannia Royal Naval College, Dartmouth. There is no alternative route to a Royal Navy commission that bypasses the AIB.

The board is typically held over a day and a half to two days at a Royal Navy shore establishment in the Portsmouth/Gosport area. Candidates complete a structured sequence of exercises — a presentation, a discussion exercise, a planning exercise, and a formal interview — in front of a panel of serving naval officers, alongside fitness and medical screening. Unlike a single interview, the AIB is designed to observe candidates across a range of pressured, unfamiliar situations so the board can form a rounded judgement of officer potential.

Candidates who do not meet the required standard on their first attempt are not automatically excluded permanently. In most cases, the board will indicate whether you may reapply, typically after a minimum period of around six to twelve months, during which you are expected to address the specific areas of weakness identified. This mirrors the "Hold" mechanism used by the Army's AOSB and the RAF's OASC — see Section 07 for a full comparison of the three services' selection boards.

Before you are invited to the AIB itself, every officer candidate completes a computer-based Recruiting Test at a Careers Office. This is the Royal Navy's initial cognitive filter and covers verbal reasoning, numerical reasoning, and reasoning components closely related to mechanical comprehension — broadly comparable in structure to the aptitude batteries used by the Army and RAF, though calibrated to naval officer requirements.

Technical branches — Marine Engineering, Weapon Engineering, and Fleet Air Arm — apply a higher pass threshold on the numerical and mechanical comprehension components, reflecting the technical demands of those roles. Warfare and Logistics branches place relatively more weight on verbal reasoning and general reasoning ability.

The AIB combines individual and group exercises so the board can observe how you communicate, plan, and behave under pressure in different settings. Every exercise is scored against the Royal Navy's officer-like qualities, and there is no single exercise you can afford to treat as unimportant.

Presentation

Each candidate delivers a short prepared talk — typically around five minutes — on a topic of their own choosing, to the assembled board. Assessors score structure, clarity, confidence, and your ability to handle follow-up questions. A well-rehearsed, clearly signposted talk with a strong opening and close consistently outperforms an over-ambitious topic delivered without structure.

Discussion Exercise

Candidates take part in a leaderless group discussion on a set topic, usually drawn from current affairs. The board observes how you contribute — whether you listen, build on others' points, and help the group reach a considered outcome — rather than simply rewarding whoever talks the most.

Planning Exercise

An individual written exercise: you are given a scenario (commonly a resource-allocation or logistics problem) and a strict time limit to produce a structured plan. This closely mirrors the planning exercises used at the Army's AOSB and RAF's OASC, and rewards clear prioritisation and explicit reasoning over a "perfect" answer.

Practical Leadership Task

A team-based, often outdoor, practical task in which candidates take turns leading the group through a physical problem-solving challenge within a time limit. Nerves affect performance here more than in any other exercise — rehearsing a simple briefing structure (aim, resources, plan, checkpoints) in advance reduces that risk significantly.

The formal interview is conducted by a panel of serving officers and is one of the most heavily weighted parts of the AIB. It typically covers motivation for joining, knowledge of the Royal Navy and your chosen branch, current affairs with a defence or maritime dimension, and questions that probe your integrity, resilience, and teamwork through past experiences.

• Motivation and branch knowledge: Why the Royal Navy, and why this specific branch? The board expects a considered answer that goes beyond "I like ships" — evidence of research into the day-to-day realities of the role.
• Current fleet and defence awareness: Familiarity with the Royal Navy's principal surface ships and submarines, its role within NATO, and recent operational deployments. Candidates who cannot discuss the service they are applying to join at a basic level are at a clear disadvantage.
• Current affairs: Global events with a maritime, defence, or security dimension. You should be able to summarise an issue and offer a considered view, not just recall a headline.
• Values and integrity: Questions exploring how you have shown integrity, teamwork, and resilience — the board is assessing whether your character is consistent with the standards expected of a commissioned officer.

Alongside the exercises and interview, AIB candidates complete a fitness assessment (commonly a timed run or a multi-stage fitness test to a set level), a swimming test, and a medical screening. Eyesight standards are strict, particularly for Warfare and Fleet Air Arm candidates, where colour vision and corrected acuity are formally assessed — not every glasses or contact lens prescription is compatible with every branch.

Royal Marines Officer candidates follow a separate, more physically demanding selection route — the Potential Royal Marines Officers' Course (PRMC), run at the Commando Training Centre Royal Marines in Lympstone — rather than sitting the standard naval AIB. If you are applying specifically to the Royal Marines, treat your preparation timeline and physical training as materially different from the naval branches covered in this guide.

The AIB is common to most naval officer branches, but the emphasis of your preparation should reflect your target specialization.

All three UK armed services use a broadly similar model — cognitive aptitude tests, group and individual exercises, and a formal interview board — but the structure and duration differ. The Army's AOSB runs as two separate visits (a shorter Briefing followed later by the four-day Main Board), the RAF's OASC is a single 2-day residential at Cranwell with an enhanced spatial and psychomotor battery for pilot candidates, and the Royal Navy's AIB is typically the most compact, run over a day and a half to two days.

If you are undecided between services, the underlying skills you need to build are near-identical: verbal and numerical reasoning speed, structured written planning under time pressure, and confident, well-researched interview performance. Preparation for one service's board transfers substantially to the others.