Collision: The Master's First Response — Immediate Priorities, Evidence, Reports, and What Comes After

The First Minutes Set the Tone for Everything After

A collision compresses two entirely different jobs into the same few minutes: keeping people alive right now, and building a record that will be scrutinised for months afterward. Getting the order of priorities wrong in either direction — treating documentation as urgent before safety is secured, or treating evidence as an afterthought once things calm down — creates problems that outlast the immediate emergency by a long way.

Immediate Priorities

1. Sound the general emergency alarm and call all hands to stations. Account for every crew member and assess injuries before anything else.
2. Stop engines if continuing to move risks worsening the damage — a vessel still making way with a breached hull can turn a contained flood into an uncontrolled one.
3. Close watertight doors to contain any flooding, and begin a systematic damage assessment: sound tanks, check for flooding, inspect for fire and structural damage.
4. Render assistance to the other vessel if it's in distress. This isn't discretionary — SOLAS Chapter V places a legal obligation on the Master to assist, so far as can be done without serious danger to their own ship and crew.
5. Exchange particulars with the other vessel — name, port of registry, ports of departure and destination — once immediate safety actions are underway.

Evidence — Secured Early, or Not At All

Evidence degrades fast, and some of it only exists in the first hour. Once immediate danger is under control:

• Secure VDR data immediately — most Voyage Data Recorders only retain a limited rolling window unless manually saved. This is time-critical, not a task for later.
• Do not alter charts, logbooks, or the VDR — no annotations, no corrections, no "tidying up" after the fact. An altered record, however well-intentioned, damages credibility far more than an honest contemporaneous error would.
• Photograph all damage, from multiple angles, with timestamps, before any repair or cleanup begins.
• Record crew statements while memory is fresh — separately, in each crew member's own words, not a single consolidated account.
• Do not admit liability or speculate on cause, to the other vessel, to authorities, or in any written record, before the investigation has actually established what happened.

Master's Reports — Who Actually Needs to Know

• Company DPA (Designated Person Ashore, per the ISM Code) — notify immediately; this triggers the company's own emergency response and shoreside support.
• P&I Club — immediate notification is critical for cover. The Club typically appoints a surveyor and legal counsel, and early notification shapes how effectively they can help from the outset.
• Flag State — collisions are reportable marine casualties under most flag administrations' accident reporting regimes.
• Coastal State — required if pollution has occurred or is threatened (MARPOL), or if the collision occurred in that state's waters.
• Port State — if in port waters or proceeding to a port, local requirements apply on arrival.

After the Collision — What Comes Next

Once the immediate emergency has passed and initial reports are made, the practical work shifts to supporting whatever investigation follows: cooperating with flag state and, where applicable, coastal state investigators; making the VDR data, logbooks, and crew statements available through the proper channels rather than informally; and continuing damage assessment and seaworthiness verification before any onward passage. None of this should be rushed to closure — a collision investigation exists to establish what actually happened, and a Master's own credibility through that process rests heavily on how carefully the first few hours were handled.

Try the Decision Simulator

You're the Master in the minutes right after a collision. Render assistance now, or finish your own checks first? Secure the VDR immediately, or once things calm down? Play through the first hour and see which ending you land on.

Test Your Knowledge

Think you've got this covered? Put it to the test in Crew Connect's free Knowledge Checker — try a quick COLREGS round and see how you score.

Related Reading

• Tricolor / Kariba / Clary — a real triple-vessel collision, played through as a Decision Simulator