Biocide-free hull coating targets fuel savings

Nippon Paint Marine has launched Aquaterras 1100, a biocide-free hull coating that, according to the company, combines a low-volatile organic compound formulation with a surface structure designed to reduce the attachment of marine organisms.

The company said the coating complies with regulations in major shipbuilding markets, including China and South Korea.

Aquaterras 1100 uses HydroPhix, described as “a micro-domain structure that combines hydrophilic and hydrophobic structures that reduce the ability of marine organisms to attach to hull surfaces, ensuring long-lasting fouling protection without the use of biocides.”

Nippon Paint Marine said the coating is intended to support lower fuel consumption and emissions by reducing hull resistance and is the first coating in the range to feature advanced fouling control, which Nippon Paint Marine described as “a unique silicone-modified binder technology that creates a smooth, glossy coating finish to prevent fouling without using biocides.”

The coating film is said to be resistant to mechanical damage and is intended to maintain performance in harsh operating conditions.

HydroCure, described by Nippon Paint Marine as a self-renewing, self-smoothing mechanism, is also included in the formulation and “creates a dynamic surface layer that continuously exposes a fresh, active surface to prevent marine growth, maintain optimal hull smoothness and reduce hydrodynamic drag.”

This coating is said to be suitable for application in drydock and newbuilding projects and has been seen to be compatible with ROV cleaning in early testing.