Specialised services for onboard water tanks
Welding, sandblasting, coating and relining services for yachts

Specialised engineering, preparation and relining service for onboard water tanks


At Marinevac, we pride ourselves on offering comprehensive solutions to ensure the optimal performance and longevity of your yacht. In addition to our renowned pipe cleaning services we can now offer tank maintenance services, which include fabrication and repair, shot blasting and painting and coatings.


Our complete range of tank maintenance services are listed below, from welding and sandblasting through to relining and painting, please contact us for more information or for a quotation


Tank Welding Service


Our skilled team of welders possesses extensive experience in marine welding, catering specifically to the unique needs of yacht owners. Whether you require repairs, modifications, or custom fabrication, our welding services are tailored to enhance the structural integrity and aesthetic appeal of your vessel.


Our Key Welding Services:

  • Hull Repairs: Addressing any damages or wear and tear on the hull to maintain the seaworthiness of your yacht.
  • Metal Fabrication: Crafting bespoke components and fittings to meet your yacht's specifications and design preferences.
  • Exhaust System Welding: Ensuring the efficient and reliable operation of your yacht's exhaust system.
  • Structural Enhancements: Strengthening key structural elements for improved durability and performance.
  • On-site Services: Our mobile welding unit enables us to deliver prompt and efficient services directly at your location in Palma de Mallorca.
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Tank Sandblasting


Fast turnaround

Relining the tank is not a particularly long job to complete, our professional engineers quickly prepare the surfaces, and once the job is completed the cleanup is quick and easy.


Environmentally friendly

Sandblasting is a safe and eco-friendly method of cleaning surfaces. The process involves using sand, which is completely harmless and is free from any hazardous substances that could harm the environment.

Excellent Results

Sandblasting is capable of removing tough stains and contaminants that other cleaning methods cannot handle. It is an efficient and effective way of achieving a smooth, clean, and even surface.


Painting and Coating

Our highly trained teams of coating applicators, engineers and water hygiene experts are capable of ensuring your water storage tanks are extensively refurbished, relined and most importantly compliant.

Tank Painting and Coating


We understand that tank maintenance is more than just a chore—it’s critical for the smooth operation of your yacht’s systems. The slightest damage to your tank lining can provide a breeding ground for bacteria and cause leeks to develop.


Regular maintenance of yacht tanks is crucial to prevent corrosion, bacteria growth, and to ensure optimal fluid efficiency. Whilst diseases such as Legionnaires is often associated with ‘land-based’ locations such as large cooling towers, hotels and hospitals, the risk is no less present with Super Yachts and Cruise ships. From onboard fresh water supply tanks, sinks, showers to swimming, Jaccuzi and spa pools.

We can provide internal tank relining and water tank repair of all types of water tanks and process vessels. Our highly trained teams of coating applicators, mechanical engineers and water hygiene experts are capable of ensuring your yachts water storage tanks are extensively refurbished, relined and most importantly compliant with ACoP L8 by carrying out all required associated remedial works.

Cleaning a tank

Storage tanks are subject to pressure and corrosion – if the water tank has surface damage the legionella bacteria can easily grow, in addition leaks can develop which allows further contamination due to the ability of foreign material and bacteria to enter the tank. If the holding tank is in poor condition this can happen very quickly.

Tank Relining


We can provide internal tank relining and water tank repair of all types of water tanks and process vessels.

Our highly trained teams of coating applicators, mechanical engineers and water hygiene experts are capable of ensuring your yachts water storage tanks are extensively refurbished, relined and most importantly compliant with ACoP L8 by carrying out all required associated remedial works.

Tank Damage
Tank Damage Two

Download our Tank Relining Case Studies

The benefits of tank relining:


Cost effective and sustainable

A sustainable alternative to replacing the water tank that lasts a minimum of 10 years*

A long term solution lasting over 10 years*

Suitable for all types of corroded and leaking GRP and galvanised steel structures

Protection from Legionella & bacteria

WRAS approved and also ACOP L8 compliant, chemical resistent and highly durable

Ideal for use with poorly accessible areas

With limited space and access it is an ideal solution for yachts

Sample relining project gallery:

Contact us to discuss your requirements

For more information, please contact our expert team on info@marinevac.com telephone +34 687 65 53 22 or fill in the form below


Our Clients

M/Y Harle
M/Y Harle
M/Y Meridian A
M/Y Meridian A
M/Y Constance
M/Y Constance
S/Y Zenji
S/Y Zenji
M/Y Phoenix II
M/Y Phoenix II
M/Y Mylin IV
M/Y Mylin IV
S/Y Q
S/Y Q
M/Y AV
M/Y AV
M/Y Almax
M/Y Almax
S/Y Asahi
S/Y Asahi
M/Y CLIO
M/Y CLIO
M/Y Savannah
M/Y Savannah

Marinevac works globally with the world’s largest super yachts, with our head office in Palma de Mallorca, our services are offered in Spain, France, Holland, Germany, Italy, Greece, Cyprus, Croatia, Turkey, Montenegro, Florida, Malta, Australia and South East Asia.

MarineVac. A truly global marine service provider
Our global locations

What our clients say

From our initial contact to request a quotation, through the planning and then carrying out the service onboard, Marinevac Croatia were extremely professional and efficient. Once onboard, they double checked our system drawings and pipelines to ensure that maximum areas of the black and grey systems were going to be treated. Each area in which they worked was fully protected to prevent any damage and everything was returned to the same condition as found after completion. I am happy to recommend Marinevac Croatia and will be using them again if in their area of operation

M/Y Queen Miri Read more testimonials