Malta Revises Assistant Engineer Rules for Commercial Yachts Under 500 GT

Malta has introduced a new risk-based approach to Assistant Engineer manning on Short Range and Extended Short Range commercial yachts below 500 GT. Yachting Notice 18, issued by the Merchant Shipping Directorate on 10 September 2026 and effective from 15 September, changes when an Assistant Engineer must be carried under the Malta Commercial Yacht Code.

The change is directly relevant to the superyacht sector. It applies exclusively to CYC-certified Short Range and Extended Short Range commercial yachts below 500 GT, a category that includes professionally operated superyachts. Malta says the revision reflects modern unmanned machinery spaces, propulsion redundancy, specialist shore-based maintenance and industry difficulty recruiting and retaining qualified Assistant Engineers.

When an Assistant Engineer is no longer required

Under the new framework, an Assistant Engineer is not required where the yacht's main propulsion machinery spaces are not continuously manned on a 24-hour basis and the yacht maintains an active shore-based engine maintenance contract. If either condition is not satisfied, the Assistant Engineer remains required.

The maintenance agreement can be with the engine manufacturer, an authorised service company or dealer, or the yacht builder. Where the original manufacturer or builder is no longer active, the notice also allows a recognised marine engineering company or independent specialist able to demonstrate competence with the particular engine type. Active engine warranty arrangements providing servicing and technical support can also qualify.

Existing yachts can request revised manning certificates

New Minimum Safe Manning certificates issued from 15 September 2026 will automatically reflect the revised framework. Operators of existing CYC-certified yachts can apply through their Malta local representative for a revised certificate.

The application requires a declaration from the master, registered owner or manager confirming that the machinery spaces are not continuously manned and that an active shore-based maintenance contract is maintained onboard. A copy of that contract must accompany the application. The crew change does not take effect until the revised Minimum Safe Manning certificate has been issued and placed aboard the yacht.

Detention remains possible if the conditions lapse

The policy is not a general removal of engineering manning requirements. Malta states that the master, owner and manager remain responsible for continuously satisfying the conditions attached to the revised certificate. If a qualifying maintenance contract lapses, or the machinery spaces become continuously manned, the Assistant Engineer requirement applies again; failure to comply can result in detention until compliance is restored.

Surveyors and recognised organisations are required to verify compliance during periodical surveys. The notice does not apply to unrestricted-navigation yachts, commercial yachts of 500 GT or more, commercial yachts below 24 metres, passenger yachts or other vessel categories.

Why the change matters to superyacht operations

The notice formally recognises a change already visible in modern yacht engineering: increasingly sophisticated propulsion and control systems are supported by manufacturer-trained specialists ashore, while automated machinery spaces reduce the need for continuous physical watchkeeping. For qualifying Malta-flagged superyachts, the revised rule can therefore affect crew structure, recruitment and operating costs without removing the requirement for professional machinery maintenance.

It also places greater importance on the quality and continuity of shore-side technical support. Owners and managers considering a revised manning certificate will need to ensure that maintenance arrangements remain valid and that the evidence required by the flag administration is available onboard throughout operation.