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New Antifouling methods - RENOLIT DOLPHIN S has been tested on Mooring Tug

Coating the newly-constructed “Lütt Deern” with RENOLIT DOLPHIN S and RENOLIT NAUTILUS gave a positive results.

What has been done?

The hull of the newly-constructed “Lütt Deern” was coated with RENOLIT DOLPHIN S. The mooring tug has been operating in the port of Hamburg since the beginning of 2016 and has been intensively attended to by a team from RENOLIT. In spring 2017, the workboat was brought to the dry dock for repairs.

Certified RENOLIT application engineers then came to the Hamburg shipyard, M.A. Flint, to inspect the conditions of the fouling release coating. Based on the positive experience with RENOLIT DOLPHIN S film,  another film was applied to the Lütt Deern while it was in dry-dock, namely RENOLIT NAUTILUS, a film which protects against corrosion.

Starting Conditions & Challenges

Mooring tugs and their crews are faced with enormous challenges every day. And to meet these challenges, the mooring boats must be robust. However, the subject of sustainability is also gaining importance.

In this sense, the new construction of the mooring tug “Lütt Deern” should set new standards. “I had the idea of an environmentally friendly boat” says Benito di Racca, Managing Director and owner of H.S.H. Mooring Company in Hamburg. And this is where RENOLIT’s innovative marine films came into play. Above all, RENOLIT DOLPHIN S offers an excellent alternative to conventional painted coatings. This film is based on a high-quality fluoropolymer layer, whose amphiphilic properties hinder fouling with mussels and algae. “But as opposed to other anti-fouling coatings, these do not leach toxins and this is what ultimately convinced me”.


“We have been using the film for almost two years now and have never had problems. When the boat was out of the water, we found almost nothing on the hull. No fouling and no mussels – for me this means: The film works well” says di Racca”. “I am extremely satisfied with the RENOLIT films. It was definitely the right decision”.

Benito Di Racca’s experience with RENOLIT MARITIME films can be also watched in this video 

Facts and Figures at a Glance

Owner: H.S.H. Mooring Company, Hamburg

Type of vessel: New construction. Steel mooring tug, 230 HP engine with an emission control system and an encapsulated cooling water system

Films used: Fouling Release (DOLPHIN S), Corrosion protection (NAUTILUS)

Based in the Port of Hamburg

Shipyard: Behrens Shipyard, Finkenwerde/ Germany

In use since: February, 2016

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  • Partner and reference boats

    IMO-Certified Protective Coating Films

  • Protective Coating Films

    Protective Coating Films

  • RENOLIT DOLPHIN S: Above-water | Fouling Release | Biocide-Free

    Above-water | Fouling Release | Biocide-Free

  • RENOLIT NAUTILUS: Above-water | Corrosion protection

    RENOLIT NAUTILUS: Above-water | Corrosion protection

Protective Coating Film – Better performance and cost optimization

Films as surface protection in the maritime industry – with these innovations, the film specialist has entered a completely new area. RENOLIT is now making a strong impact in maritime applications. Regardless of whether anti-slip films, fouling release films or protection films for working vessels: RENOLIT’s solutions for the seas and inland waterways always offer the maximum customer benefit.

Protecting Workboats: Clean, Fast and Economical

One of the arguments for these innovative films as an alternative or supplement to conventional paint coatings is the visual effect. Whereas paint coatings are often of varying thicknesses, the films are consistently thick. Moreover, they are easily applied and can effect small localized repairs. Additionally, the films offer reliable protection and durability for your working vessel. Another advantage is that during the application of the films no volatile organic compounds (VOC) evaporate. This means that no harmful substances are released and no special precautions need to be taken such as the wearing of protective clothing. Maintenance work (also welding) can be carried out at the same time as application and this also reduces downtime.


RENOLIT sells its film innovations for workboats and ships as well as for other maritime applications primarily to industrial customers. Smaller quantities for private use are available from our constantly growing network of sales partners. For more information about RENOLIT click here.

RENOLIT Maritime RENOLIT Dolphin S RENOLIT Nautilus


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Footnote: The characteristics of the products when applied can be influenced by a number of factors such as application area, application procedure or environmental conditions. Specific characteristics cannot therefore be agreed or guaranteed. The films may only be applied by certified contractors. Please refer to the corresponding technical data sheets for detailed product characteristics. Our application engineers will be pleased to advise on the selection of the best products and answer any other questions.

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