A crew change can alter the number of people on a vessel within minutes. Add a riding squad, surveyor or repair team, and a lifejacket inventory that looked satisfactory yesterday may no longer describe the situation today. The useful question is whether the right equipment is available to the people actually aboard, at the locations where they would need it.

This article suggests a practical reconciliation process for the master and responsible officers. It does not prescribe a universal carriage quantity or replace the vessel’s approved arrangements, applicable flag requirements or safety management procedures.

Start with the vessel’s approved arrangements

IMO explains that life-saving appliance requirements vary with a ship’s size, activity and voyage. SOLAS and the LSA Code provide the international framework, but applying that framework requires the correct vessel information. Review the relevant certificates, equipment record and approved arrangements before deciding that an inventory is sufficient. See IMO’s overview of life-saving appliances.

Do not use a rule remembered from another vessel as the calculation for this one. The UK Maritime and Coastguard Agency’s life-saving equipment guidance, for example, distinguishes requirements for different ship types. That is UK guidance, not a substitute for instructions applicable to a Saudi-, Panama- or Liberia-flagged vessel. Refer unresolved questions to the company and relevant administration or recognised organisation.

Connect the equipment check to the boarding record

Use one agreed source for the current number of persons aboard. A crew list alone may omit technicians or other temporary visitors. The person coordinating boarding should communicate changes to the officer responsible for emergency arrangements, using the vessel’s established procedure.

A useful working record separates people currently aboard, expected arrivals and confirmed departures. Mark the time of the check. Avoid treating a planned departure as completed: an outgoing crew member waiting for transport still needs to be included in the vessel’s arrangements.

Consider a vessel with twenty crew and a six-person repair team expected after lunch. “Six visitors expected” is an early planning entry; it becomes an actual count when boarding is confirmed. Before that arrival, the responsible officer can check allocations, relevant locations and any restrictions. This example illustrates a workflow, not an authorised carrying capacity or a lifejacket quantity calculation.

Record usable equipment, not just equipment owned

An inventory should distinguish equipment available for use from items set aside for investigation, servicing or replacement. A lifejacket awaiting assessment should not quietly remain in the same total as equipment confirmed ready for its assigned purpose. Record the discrepancy and let the responsible officer determine the required response.

For each location, a simple worksheet can identify the approved equipment description, quantity physically present, quantity available, outstanding issues and person checking. Link individual identifiers to records where the vessel’s system uses them. This helps explain why an apparent shortage exists without assuming that another locker contains an acceptable replacement.

When equipment returns from service, reconcile the delivery against what was sent away and the accompanying paperwork. Close the record only after the responsible person has confirmed the equipment’s status and destination. A delivery note by itself does not show that the items reached the correct onboard location.

Check suitability and access as separate questions

A total cannot show whether an item is suitable for its intended wearer. Check the equipment’s markings and manufacturer’s instructions, including the applicable size range and donning information. If an unfamiliar size or fit issue arises, resolve it through the vessel’s procedures before relying on the equipment. Do not improvise alterations to straps, buoyancy material or inflation components.

Then check the route from the person to the equipment. Temporary stores, work barriers or a changed accommodation allocation can make a familiar arrangement less straightforward. Confirm that designated storage is identifiable and accessible under the approved arrangements. Do not relocate equipment merely to simplify a spreadsheet; changes need the responsible officer’s review.

Give temporary personnel a clear introduction

A visitor may understand marine work while remaining unfamiliar with this particular vessel. Include relevant alarm, muster and lifejacket information in the required onboard familiarisation. Use language the person understands and the vessel’s approved demonstration or training method. Ask the visitor to identify their assigned muster location and where the applicable equipment is kept.

Keep training items distinct from operational allocations where the vessel’s procedures require it. If familiarisation exposes uncertainty about location, fit or instructions, record and resolve that uncertainty. A signed attendance sheet is useful evidence of a briefing, but it should not become a reason to overlook an unresolved practical question.

Close the loop before the next change

At handover, pass on the confirmed headcount, expected movements and open equipment issues. Identify who owns each action and when it needs resolution. Where a shortfall or suitability concern affects readiness, escalate it through the master and company procedures rather than treating it as a routine purchasing task.

For planned supply or service attendance, share the vessel’s equipment details, quantities, relevant approval information and port schedule. Offshore Marine Solutions can assist with coordinating marine safety equipment support. The aim is an arrangement that remains understandable when people arrive, leave or change their working location—not merely a total that looked correct at the last inspection.