Philip Chaabane, CEO - I-Tech AB

Application of Biotechnology in Antifouling Solutions for Hard Fouling Prevention

Hull Performance & Insight Conference (HullPIC)

Gubbio, Italy - May 6, 2019

A bio-tech approach: Receptor stimulation

Receptor

stimulation triggers

flight mode

Image provided by CMP

Barnacle cyprid larvae

Selektope® - adding new dimensions

=

Single biocide system within

polyurethanes and epoxy

silicones for ship hulls or other

structures

=▪ Offshore cables

▪ New hull maintenance options

▪ Wave power etc

Image provided by CMP

Reduce spread of aquatic species• Hull biofouling identified as key IAS vector.

Reduce fuel bill• Acknowledged fuel saving potential across the global fleet

corresponding to around 10-15 billion USD

Reduce exhaust emissions• >100 million tonnes of CO2 emissions saving + a lot of

SOx/NOx/PM

Regulatory disruption already executed• Remaining active agents are among the most thoroughly

evaluated industrial products all categories.

”The hull is in the air”

Alternatives to cut CO2 by 50%:

1) Technologies independent from ship type

and with relatively low investment

barrier. Your hull is a fundamental piece in

the CO2 equation!

2) Technologies suitable on specific vessels

and with high investment barriers

(alternative fuels, wind rotators, new bulb,

new propeller

Natural Receptor Stimulation

Octopamine Receptors from the Barnacle Balanus improvisus Are Activated by the α2-Adrenoceptor Agonist MedetomidineUlrika Lind, Magnus Alm Rosenblad, Linda Hasselberg Frank, Susanna Falkbring,

Lars Brive, Jonne M. Laurila, Katariina Pohjanoksa, Anne Vuorenpa¨a¨ , Jyrki P. Kukkonen,

Lina Gunnarsson, Mika Scheinin, Lena G. E. Mårtensson Lindblad, and Anders Blomberg

• Signal translates to

swimming/kicking behviour

1.Ligands, located outside the cell

2.Ligands connect to specific receptor proteins

3.The receptor releases a messenger once the

ligand has connected

• Medetomidine is highly selective and links to

the barnacles larvae octopamin receptor

transmitting signals.

https://en.wikipedia.org/wiki/Receptor_(biochemistry)

Purpose of a receptor Receptor pocket

Triggering flight mode

Life cycle analysis

X

• Exploratory surface

behaviour necessary to settle

is blocked.

• Kicking frequency is around

100/min

• Swim speed can be twice its

length per second.

Highly compatible with AF coating components

Combination with all existing biocides is

possible.

A glimpse of vessel types using Selektope

Self depletion systems:

• Rosin based / acrylic

Self polishing systems:

• Silyl-acrylates, Metal-

acrylates, Nano-acrylates

Selektope® - a differentiating agent

• Powerful enough to replace CuO and flexible enough to boost

• Repellent mode of action (flight mode)

• Used at around 0,1%w/w (a few grams per liter paint)

• Is ultra low leaching (e.g., 2g vs > 100g /day) .

1.6

96

756

SELEKTOPE ECONEA CU2OALT A ALT B

[G/L PAINT]

Proven in-service Selektope® performance

• Globally trading MR Tanker (Team Calypso) coated with Selektope-powered AF in 2015

• Average characteristics:

• activity rate 60, average speed 12knots, Average temperature 25°C, Several long idling periods of 25 days+

Case study 1

Convincing 3-year results on Team Calypso

27 months:

• Vertical sides clean

• 6% added hull resistance

32 months

• Vertical sides clean

• 8% added hull resistance

36 months

• Vertical sides clean

• 8% added hull resistance

Month 41: only 10%

added hull resistance

(total added resistance

16%)

Case study 1

CAPSER Report. Propulsion Dynamics

Team Calypso: outperforming sister vesselsCase study 1

• 10% less increase in added

resistance that its sister ships,

so far.

• All three ships have premium

AF coatings

• One is copper-based SPC,

one is foul-release and one is

a Selektope-based SPC

Ferry shows strong antifouling properties

Helenic Seaways Nissos Chios uses Selektope AF (Cu-free) for 12 months.

Arrival condition at DD after 12 months.

Case study 2

Polyurethane with Selektope® is barnacle free

• Polyurethane material

impregnated with

Selektope

• Test panel location: west

coast of Sweden

• Submerged: May 2013 -

September 2014

• Static period: 16 months

Case study 4

Molded polyurethanes with Selektope®

• Formulation containing 0.37%

Selektope® versus reference

panel with 0% Selektope®

• Test panel location: west

coast of Sweden

• Submerged: October 2015 -

November 2017

• Static period: 25 months

Case study 4

Silicon epoxy coatings with Selektope®

• Purpose: Investigate if hard and slippery coatings doped with Selektope can be developed?

• Is there a demand link in to future trends on grooming, yachting (one-biocide only systems approved) etc?

• So far, epoxy-silicones prove strong barnacle resistance (but a lot of other fouling is attached)

• Next steps are to evaluate dynamic aspects etc.

Test panel location: west coast of Sweden. Static period: 18 months

Case study 4

Philip.chaabane@i-tech.se

www.selektope.com

www.i-tech.se

Follow us on Twitter: @Selektope

Stay tuned for more to come