The Lütt Deern makes a big splash

There is a trend towards a biocide-free coating of ship hulls.

Fouling organisms are less likely to attach to the hull and are washed off when the ship moves.

LüttDeern is a mooring boat and a pioneer in terms of ship coatings.

Worms, 03. November 2017 – The Lütt Deern mooring boat entered ser-vice in February last year. Since then, it has been setting new standards when it comes to biocide-free fouling protection. Fitted with a soot filter and a closed coolant system, the mooring boat is also a pioneer in terms of ship coatings and has been part of a pilot project in the port of Hamburg for more than a year and a half.

Biocides are generally used in professional navigation, for example to prevent fouling by algae and shells. While biocide coatings prevent fouling, their release also damages the environment and marine organisms. RENOLIT, a family owned company based in Worms, Germany, has been one of the leading manufacturers of high-quality plastic films over the last 70 years. The company has now developed a film for the maritime sector that offers an alternative to these coatings.

RENOLIT DOLPHIN S is a fouling release film, which, compared to the usual anti-fouling solutions, is completely biocide free. The hull of the Lütt Deern was coated with this film in February 2016. The mooring boat has now been taken out of the water for repairs. This provided the perfect opportunity to examine the special functionality of the film.

Even Benito di Racca, owner of the Lütt Deern and Managing Partner of H.S.H. Schleppgesellschaft mbH, made the trip to the M.A. Flint shipyard. “When the boat was taken out of the water, there was hardly any deposit build-up on the hull. No fouling, no shells. For me, this means that the film works,” says di Racca.

Sébastien Charlès, Business Manager with RENOLIT MARITIME, is conviced of the effectiveness of the film: “RENOLIT DOLPHIN S is an out-standing and, above all, promising solution. Many ports already have a rule that only ships with a biocide coating may enter the port. While such a rule does not yet apply in Hamburg, there is a growing trend for biocide-free coatings. The regulations are getting stricter, and at the same time ship-yards and ship owners are subject to growing demands. Benito di Racca was on board with the concept from an early stage and helped us to show that the film works.”

As a result of the positive experience, two more RENOLIT films have been applied to the boat. RENOLIT SHARK – an extremely stable protec-tive film, which offers protection against weatherability, UV radiation and bleaching out – was applied to the part of the ship’s hull that is above wa-ter. RENOLIT NAUTILUS – an anti-corrosion film – was attached to the wheelhouse.

“I am very satisfied with the RENOLIT films. The film is still completely intact on the hull, even after repeated inspection intervals and launches. The film has been in place for almost 20 months and we have never had any problems. The opportunity to perform detailed repairs is also an advantage. In the spring, we had an accident during which the film was damaged. This damage could now be repaired by simply replacing small sections of film,” says Benito di Racca.

The Company 

The RENOLIT Group is one of the leading international manufacturers of high-quality plastic films and associated products for technical applications. The independent, family-owned company has been setting standards for quality and innovation for 70 years and presently employs around 4,500 people in more than 30 production plants and sales offices. In fiscal 2016, the Group generated sales of EUR 965.6 million.