Engine Room Familiarization Checklist: 6 Stages, 13 Items

Updated 28 September 2026 · ism-code, engine-room, marine-engineering, safety-management

An engine room familiarization checklist under the ISM Code has six stages, ordered by risk from most urgent to least:

1. Safety basics before the ship sails
2. Escape routes and emergency controls
3. Main and auxiliary (backup) machinery
4. Electrical plant and how to restore power after a blackout
5. Pollution-prevention and support systems, such as the bilge and sewage systems
6. Watchkeeping routines and handover from the engineer being relieved

Under the ISM Code — the International Maritime Organization rule that requires a shipping company to run a written safety system called the Safety Management System (SMS) — the company must have a procedure that gives a new or reassigned engineer proper familiarization with duties that affect safety or the environment. The Code itself does not supply the checklist, a deadline, or a rule on who signs it. Those details are set by the ship's own SMS, and sometimes by extra rules from the flag state, class society, or charterer on top of it.

A signed checklist does not by itself prove competence. For example, a line for "quick-closing valves" might get ticked after someone just points at a cabinet in passing. Quick-closing valves are the manual shut-off valves on fuel and oil tanks that stop fuel flow so a fire cannot spread. The engineer may still be unable to isolate a fuel fire from the remote station. That station is the control panel, usually just outside the engine room, that lets someone close those valves without entering a burning space.

This guide sorts familiarization tasks by risk and splits each one into three levels: what the engineer has seen, what has been explained, and what has actually been operated by hand before the ship sails.

What the ISM Code actually requires for engine room familiarization

The ISM Code requires the company to set up procedures so that new personnel, and personnel moved into new duties that affect safety or the environment, receive proper familiarization with those duties. That obligation is stated in the ISM Code text, published by the UK's Maritime and Coastguard Agency, the UK government body responsible for maritime safety (checked 2026-09-28).

The Code does not give a universal form, a completion deadline, a retention period, or a rule on who signs. Those details sit in the company's SMS. Extra requirements can come from three other places. The flag state is the country whose flag the ship flies; its maritime rules apply on board. Class, short for classification society, is the private technical body that inspects and certifies the ship. The charterer is the company that has hired the ship for a voyage or a period, and it can add requirements of its own. A practical first step on joining is to ask the chief engineer for the SMS familiarization form for that rank on that ship, and to read its instruction page before ticking anything.

The German flag administration's ISM circular on familiarization on board splits the job into two parts. The first is initial safety familiarization before the ship departs. It covers four things. First, the muster-list duty: the job assigned to each crew member during a drill or a real emergency. Second, the muster station: the deck location where that crew member reports. Third, the alarm signals used on that ship. Fourth, the location of life-saving appliances such as lifeboats and life jackets, and the fire-protection equipment nearest to where the engineer sleeps and works.

The second part is job-specific familiarization: the engineer's workplace, the equipment and systems used there, onboard operating processes, watchkeeping arrangements (who is on duty and when), and emergency procedures. A good engine room checklist follows that same two-part structure even when the company's own form does not label it that way.

Located, explained, operated: the distinction that matters

The most useful change to any familiarization checklist is to split every line into three levels of sign-off. A box that only says "done" hides whether the engineer saw the equipment, heard it explained, or actually ran it.

The third level, operated under supervision, is where joining engineers most often get caught out. West P&I, a marine protection-and-indemnity insurer — an insurer that covers a shipowner's liability claims, not damage to the ship itself — has published guidance on familiarisation when taking over a role. Industry checklists linked to that guidance call for practical demonstrations, not just explanations.

These demonstrations include starting and stopping equipment both locally and remotely. They include transferring control between stations: switching which panel is driving the engine, whether that is the bridge, the engine control room, or a local stand next to the machine itself. They include running the standby pump — starting the backup pump to prove it can take over if the main one fails. They also include restoring an electrical circuit after it trips: getting the breaker back on and the equipment behind it running again. Emergency-mode steering belongs on this list too. For each of these, knowing where something is and being able to do it are different skills.

Some items can only ever reach "explained." No engineer will fire the CO2 system to prove they understand it. For that item, the honest sign-off is a walk-through of the release procedure at the station itself: which doors and ventilation must be closed, who confirms the space is clear, and where the release instructions are posted.

Building the engine room familiarization checklist in six stages

Order the checklist by risk: the things that can kill someone on the first night go first, and the paperwork goes last. Each stage below lists what belongs in it and which items should reach the "operated" level.

Stage 1: Before the ship sails

Stage 1 is general safety familiarization, and the flag state may expect it finished before departure. It covers the muster-list duty and muster station, the general alarm and fire alarm signals, the location of the lifejacket and immersion suit, and the fire-protection equipment close to where the engineer sleeps and works.

Stage 1 in the engine room should also cover the CO2 or fixed-system alarm signal. That signal is a distinct siren or bell pattern, different from the general alarm, meaning the space is about to be flooded with fire-suppressant gas and everyone must leave immediately. Learn to recognise it by ear, because by the time it sounds there may be no time to read a sign. The engine room is loud enough that ordinary hearing protection can block out speech and alarms alike, so the crew needs protection built to let an alarm through. The guide to noise-cancelling headphones for engine room work covers models built for that trade-off, for anyone choosing gear.

Stage 2: Escape routes and emergency controls

Stage 2 confirms the engineer can get out, and can stop things, without thinking. That means walking every escape route from every level of the engine room, including the emergency escape trunk, and then walking them again from the purifier room and the workshop.

Emergency items commonly listed here are emergency stops, quick-closing valves, bilge alarms, fixed fire-extinguishing systems, ventilation shutdowns, escape routes and the CO2 release procedure. For each quick-closing valve, the engineer needs to know which group it belongs to, where it is tripped from, and how it is reset. The reset step is often the part nobody explains until it is needed.

ClassNK, a ship classification society, publishes a shipboard self-checklist covering engine room escape-route controls and machinery condition. It is an audit and self-assessment document and does not work as a joining checklist on its own, but it is a useful cross-check for anything a company's own form has left out.

Stage 3: Main and auxiliary machinery

Stage 3 covers the main engine, auxiliary engines, boilers, steering gear, emergency generator, unattended machinery space systems, alarms and normal operating parameters. Writing the normal parameters for each machine in a personal notebook during the first few watches helps: "normal" is whatever the trend has been on that ship, and a drift is easier to spot once the baseline is known.

Local and remote control changeover is the trap to watch for here. Every ship handles control transfer between the bridge, the engine control room and the local stand in its own way. It differs in how the handover is requested, how it is acknowledged, and what the console shows when control is in between stations. A supervised transfer should be requested directly; this line should not be signed off at "explained" alone.

Steering gear belongs in this stage too. Emergency-mode steering should be operated under supervision, preferably during a steering gear test before departure.

Stage 4: Electrical plant and power recovery

Stage 4 covers switchboards, emergency power, generators and paralleling. The line that matters most is restoring power after a trip. Under supervision, that means starting a standby generator, synchronising it, putting it on the board and sharing the load, then going through the blackout recovery sequence for that particular plant, including which consumers restart on their own and which need a manual reset.

If an emergency generator test happens during the familiarization period, taking part in it is worth more than any explanation. If it does not happen, the item should be listed as deferred (see below) rather than signed off on the strength of a description alone.

Stage 5: Pollution prevention and support systems

Stage 5 is the longest list: compressors, pumps, fuel oil and lubricating oil systems, cooling systems, oily water separator, sewage treatment, incinerator, ballast systems and environmental controls. Most of this is routine work, and routine work is where a new engineer goes wrong with a valve line-up assumed rather than checked.

The oily water separator and the overboard discharge line-up deserve particular attention, because mistakes there turn into pollution findings. The purifiers need the same care. The fuel oil purifier troubleshooting checklist covers the stop-or-adjust decisions that come up once an engineer is standing watches.

Stage 6: Watchkeeping, handover and the SMS

Stage 6 ties everything to how the engine room actually runs day to day. It covers the chief engineer's standing orders, night orders, watch arrangements, unattended machinery space duty rules, alarm call-out routing to the engineer's cabin, and the SMS procedures for that rank.

The Engine Room Procedures Guide (1st edition, 2020) lists crew-change familiarization and handover procedures, plus a system for identifying training needs, among the procedural elements a company should have. In practice, this means handover notes from the engineer being relieved belong with the familiarization record. Open defects, running hours on critical machinery, and anything unusual about that plant should all be written down before the outgoing engineer leaves the ship.

Who verifies competence, and by when

The SMS names who verifies and sets the deadline; the ISM Code text does not. On most ships the chief engineer owns the engine room part of the record, but only the company procedure states who has signing authority and when the form must be complete.

Any deadline should be taken seriously rather than fudged. If the SMS sets a time limit that cannot be met because the ship sailed early, equipment was under maintenance, or the engineer was put straight on watch, that should be written down. An honest record with open items is easier to defend than a form finished in a single afternoon.

A port state inspector or an ISM auditor may test the record directly, for example by asking the engineer to walk to an emergency control or to explain how to start the emergency fire pump. The form counts for as much as the answer given at that moment — which is the point of the "operated" level.

Recording failed demonstrations and deferred items

A good checklist has a place for things that did not go to plan. Most generic forms have no such place, so one should be added if the SMS form lacks it.

Each deferred item needs five pieces of information: the item, why it was deferred, any interim measure (for example, "second engineer attends if this equipment is required"), a target date, and the person who will sign it off later. Each failed demonstration needs a note saying what went wrong, what retraining was given, and the date it was demonstrated successfully. This is the training-needs loop the Engine Room Procedures Guide describes, applied at the level of a single engineer.

Generic checklist templates: honest pros and cons

Commercial templates exist and can help a small operator whose SMS is still thin. According to its product page, Superyacht Docs sells a crew familiarisation package covering engine room systems and SMS procedures. A separate SMS documentation toolkit lists its own familiarization forms for engineer officers and engine room crew. Neither product page reviewed on 2026-09-28 stated a price, a plan limit, or independent validation, so pricing and terms should be checked directly on the vendor's page before relying on either — current price: unknown for both.

Pros

• Faster drafting: a template gives a small company a structure to adapt instead of a blank page.
• Broad system coverage: the common engine room systems are usually already listed, so obvious items are less likely to be missed.
• Consistent format across a fleet: crew who move between vessels see the same layout each time.

Cons

• Not mapped to your machinery: a template does not know how a given ship handles control transfer, what is in its quick-closing valve groups, or its blackout recovery sequence.
• Tick boxes hide the level: most forms record "done" and cannot tell located, explained and operated apart.
• No deferred-item logic: open items often have nowhere to go, which pushes people toward ticking boxes they have not earned.
• No proof of acceptance: the sources reviewed here do not show that any named template is accepted by every flag state or class society, and no independent validation of these products is published.
• No documented failure data: the sources reviewed here contain no independently documented incident, complaint, or audit finding tied to a missed familiarization item on a specific checklist, and no adoption or completion-rate figures for engine room familiarization checklists in general. Both are unknown, not zero — this review simply found no source that states them.

Who should not rely on a bought template

A joining engineer should not use a bought template in place of the company's own form. If the ship has an SMS familiarization form, that is the record an auditor will ask for, and a parallel document only causes confusion.

A small operator should not treat a template as finished once a logo is added. Before it is fit to use, it has to be mapped against the vessel's machinery, emergency arrangements, flag requirements, and each rank's watchkeeping duties.

A manager who expects a template to pass an audit by itself should not buy one on that basis. The ISM obligation is a working procedure that is followed on board, and a document alone does not meet it.

Keeping the record usable on board

A paper original should be signed where the SMS requires it, with a photographed copy kept on a personal device. Photographing each signed page as it is finished means the record does not disappear if a folder goes missing during crew change.

A tablet or laptop with offline notes makes a parameter notebook and handover notes much easier to search later. The roundup of best apps for marine engineers covers note-taking and reference tools that work without a connection. For officers who also run the paperwork side, the guide to digital tools every chief engineer should know covers the wider set of tools for records, planning and reporting.

FAQ

Does the ISM Code include a standard engine room familiarization checklist?

No, it does not. The ISM Code requires the company to have procedures that give new and reassigned personnel proper familiarization with duties affecting safety or environmental protection. The actual checklist, its format and its sign-off rules are set by your company's SMS.

How long do I have to complete engine room familiarization?

Your company SMS sets the deadline, and flag or charterer requirements can add to it. The ISM Code text does not give a universal time limit. Safety familiarization such as muster duties and alarm signals is generally expected before the ship sails, so do that part first.

Which checklist items should I physically operate, and which only locate?

Operate anything you may need to do alone during an emergency or on watch. That includes local and remote start and stop, control transfer, standby pump changeover, restoring a tripped circuit and emergency steering. Items that cannot be tested live, such as the CO2 release, should be walked through at the station and signed as explained.

Who signs the engine room familiarization record?

Your SMS names the signatories. On most ships the chief engineer, or an officer they delegate, signs the engine room items, and you sign that you received the familiarization. Check the instruction page of the form, because signing authority varies between companies.

What should I do if I cannot complete an item before sailing?

Record it as a deferred item. Note the reason, any interim measure, a target date and who will sign it off. An honest open item is easier to defend in an audit than a box ticked without the demonstration behind it.

Related reading

• Digital tools every chief engineer should know
• Fuel oil purifier troubleshooting for marine engineers
• How to study for certificates while at sea

Verdict

Start from the company's SMS form, sort its items by risk into the six stages above, and give every line one of three levels: located, explained or operated. Items involving control transfer, power recovery and emergency steering should not be signed until they have been done by hand. Keep an honest record of what was deferred and why, since the ISM Code sets the obligation but leaves the form, deadline and sign-off rule to the ship's own SMS.

About this page

This page states what the ISM Code text requires, names the source and check date behind each figure, and flags where a detail — such as vendor pricing or adoption numbers — was not found in the sources reviewed and is marked unknown rather than guessed. Claims are re-checked on the schedule shown in each source note; where a fact depends on a specific ship's SMS, flag, class or charterer, that dependency is stated rather than smoothed over.