ISO hat trick for Welsh Marine Engineers

Having previously achieved ISO 9001:2015 and ISO 14001:2015 certification, Welsh marine engineers, Mainstay Marine Solutions has recently gained certification to ISO 45001:2018, the global Occupational Health and Safety standard, becoming one of only a few boat...

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Reconfigurable livestock boat delivered to NI RSPB

Pembroke Dock-based marine engineers and workboat designers and builders Mainstay Marine Solutions has delivered a 15m livestock Cot boat for the purposes of habitat maintenance for RSPB Northern Ireland.  Designed and built by Mainstay, the 14te vessel will transport...

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Wave energy demonstrator ready to swing into action

Mainstay Marine Solutions, specialist marine engineers in South West Wales, has completed the fabrication and assembly of the 48te Wave Energy device for Australian company AMOG Consulting. The device was deployed from Pembroke Dock 8:00am Friday 2nd August and...

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COVID-19 Update – Mainstay is temporarily closed

For the full statement please click here. 

Please note that during this time we will be monitoring emails.

Should you wish to contact us regarding any new opportunities or marine services work, please email

As soon as circumstances allow, we will be ready to continue our current repair, maintenance, refit, new build projects and be ready to take new build orders. 

In the meantime, look after each other and stay safe.

We look forward to welcoming you all back soon.


Whether it’s a new boat build or refit, boat maintenance, jetty or harbour infrastructure, or marine energy device fabrication we understand that minimal downtime is key.

We meet your critical deadlines and ensure you have a high quality vessel in service for a maximum amount of time.