Actualités Clean Ship
Damages by shells on a boat hull
Benefits of the TWIN-f® system
For boats and yachts of all sizes
Best cost / performance
Ends painting and scraping
Protects the drive gear
Reduces hull resistance
Increases fuel economy
Suitable for all yachts and boats, over 15m (>50
Efficient on fibreglass and metal hulls (not wood)
Full spectrum algae control
Adjustable power settings
Programmable for season, boat type, algae level
Suitable for solar power (optional)
Economical and ecological
Reduces boat friction and enhances performance
Maintains top boat speed throughout the season
Operating cost savings
Just keep your hull safe
Ultrasonic Antifouling for Yachts and Ships
The basic science behind the TWIN-f® system is sound
TWIN-f® uses resonance of ultrasonic waves to kill algae.
The TWIN-f® system is installed on the inside of the hull of
the boat, below the water line. The transducer generates ultrasonic
waves that form an ultrasonic barrier around the hull of the
boat. The ultrasonic signal will attack and kill the algae by
tearing the gas vacuole.
Ultrasonic Antifouling Technologies
The basic science behind our TWIN-f® system is sound
Continuous inaudible ultrasonic vibrations are generated by
the TWIN-f® system that cause oscillations of the algae vacuole
leading to its death.
The broad frequency range achieved by this new technology allows
ground breaking performance, far surpassing mono-transducer
The ultrasound challenge
The challenge to ultrasonic algae control is the fact that each
algae species has its own resonance frequency that’s required
to destroy it. With over 30,000 known species ranging from unicellular
to over 30m in length, there are many more frequencies needed
than any single transducer system could technically achieve.
Algae and molluscs are a constant and costly battle for every
boat owner in order to maintain his investment and performance.
The boating industry has grown accustomed to the intensive maintenance
necessary to maintain performance and prevent serious hull damage,
periodic antifouling painting, water jetting the hull and even
The toxic materials used in antifouling paints lead to increasing
restrictions and regulations worldwide in order to protect the
The TWIN-f® advantage
With two unique transducers and with the help of a law of physics,
the new TWIN-f® system achieves full range algae control, regardless
of geographic location and regionally dominating species.
Ultrasound affects algae
Ultrasonic sound waves, tuned to precise frequencies to control
algae is not science fiction. It's actually a very effective
tool to control algae, and it will help to minimize the use
of antifouling bottom paint used on boats, eliminate the need
for chemical algaecides, lower maintenance costs and contribute
to a healthier environment.
A law of physics offers solution
The TWIN-f® combines multiple frequencies to provoke what is
called “heterodyning”, generating new frequencies and power
This technology allows us to achieve the full frequency range
required for reliable and efficient algae control.
Unlike existing pulsed ultrasound technologies TWIN-f® adds an
additional distinct transmitter that succeeds to expand the
frequency range and achieves unparalleled efficacy and reliability.
TWIN-f® wins the battle against algae and eliminates the chores
and repetitive cost associated to keeping the hull clean and
Safe and effective
This system will not harm fish or aquatic life. Ultrasound has
proven to be very safe for fish and other marine wildlife. It's
important to note that our TWIN-f® ultrasonic units are frequency
tuned to damage only the cellular wall of the algae. The frequency
range used is not harmful to marine wildlife and other plants.
The damaged vacuole prevents the algae from regulating its flotation
level in the water for optimal chlorophyll synthesis and as
a result leads to its death.
TWIN-f® Ultrasonic Algae Control
Ultrasound technology for algae control is becoming one of the
top treatment methods for a variety of unwanted algae growth
in sailboats, yachts and ships, large and small, and industrial
Benefits of using ultrasound include safe, eco-friendly control
of algae, which either eliminates or limits the use of antifouling
paints. The installation is often quite simple and easy. And
the technology is safe for fish and wildlife. Annual treatment
costs are often reduced as well.
Even the remote and hard to reach locations can now be treated
with our ultrasound system effectively thanks to their lower
power demand, and our solar power kit. This system includes
everything needed to power all of our ultrasound units for 24/7
around the clock operation economically.
Boat owners around the world all have the same problem: keeping
their hulls clean and free of marine growth. Boats left in the
water will quickly develop algae growth below the waterline.
Algae is a food source for barnacles, sea pocks, mussels and
molluscs. Once these creatures attach to your hull and running
gear, they quickly multiply, causing your boat’s performance
to suffer. As we all know, drag means less speed and more fuel
This new and innovative TWIN-f® antifouling system incorporates
the latest proven ultrasonic technology which emits low frequencies
which are radiated through the boat's hull in order to destroy
algae that are the basis of all weed growth and micro organisms
such as, barnacles, zebra mussels, oysters, clams and tube worms
and will prevent them from attaching themselves to your boat's
hull and drive system. Our unique system creates a barrier that
covers the hull and the running gear including z-drives, propellers
and propeller shafts. Our system is proven to work.
Economical and safe for the environment
Our TWIN-f® ultrasonic anti-fouling system's performance will
convince even the hardened sceptics with significant cost savings
over as little as a one year period (compared to yearly slippage
and conventional antifouling paint treatments).
After the first year the savings will grow and grow !
Our TWIN-f® system comes is four versions, single, two, three
and four-pair transducer system. The basic system consists of
a pair of transducers connected to a control box. This system
is used for boats 15 meters and up in length.
The transducers with its installation kit are installed inside
the hull with epoxy glue and no holes in the hull are required.
All kits come complete with all necessary cabling.
It is up to you where to place the control box but it is important
that it is placed above the waterline in a dry suitable place
in the vicinity of an electrical power source.
The TWIN-f® ultrasonic transducer(s) should be placed below the
water line. One must make sure that the transducers are not
mounted on any false floor or internal skin.
Mounting the transducers within 1 to 1.5 meters of the propeller(s)
or drive unit(s) will help to keep these clean from fouling
as well as they will be within the effective area of the transducers
The ultrasonic revolution in algae control
Like many hi-tech devices, ultrasonic transducers used in marine
anti-fouling systems have improved significantly since their
commercial inception in Belgium and in the USA in the early
The earlier versions of the ultrasonic antifouling systems were
restricted by limitations of transducer technology which only
produced a narrow band of output pulses.
The newly designed TWIN-f® ultrasonic antifouling protection
system uses the latest digital technology which produces a far
wider range of output pulses resulting in a significant improvement
The ultrasonic package
The TWIN-f® system will unleash your boat's potential, give you
enhanced fuel economy and will protect your boat 24 x 7. No
barnacles, no drag, no fatter boat and most importantly, you
will use less fuel to drive your boat through water.
Our TWIN-f® anti-fouling system reduces costly bottom maintenance
and it easily pays for itself in a short period.
Apart from eliminating the hassle and recurring expenses of
conventional antifouling, the big benefit of an ultrasonic system
is that it also protects items like cooling water intakes and
other inaccessible areas.
A good installation should also cover parts that are subject
to high abrasion, such as propellers, trim tabs and rudders.
|The solution : The TWIN-f®
With our solution you hull remains clean and
the efficiency of your engine, reduce cleaning time and
associated costs when the boat/yacht is hauled out of
the water for maintenance.
The Benefits when using our TWIN-f® system are :
With the TWIN-f® ultrasonic system you will achieve higher
speed as your hull will remain clean and therefore will
you to maintain your maximum speed.
It will also keep clear all those underwater areas that
to the performance of your boat, that is, speed log impellors,
water intakes for engine and air condition units, propellers,
rudders, transducers, etc.
||The fuel savings will be substantial, especially
for boats with inboard / outboard engines. Pushing a heavily
fouled hull through the water takes considerably more
power than a clean one which has much less resistance.
It can take up to 20% more fuel to push a dirty hull through
|Save time and money
||You only buy and install
our system once. There is no maintenance what so ever.
You will not inhale toxic dust from your antifouling or
get covered in poisonous paint as with conventional antifouling
paints, so you can look forward to more time on the water
and less time sanding and painting.
Our system will pay for itself in a very short time if
you consider the cost of the lift in and out of the water,
the cost of the antifouling paint and the labour cost
to remove the old paint and apply the new coat.
||You'll be doing your bit for the environment
as there are no pollutants associated with this method
of preventative antifouling. It is also completely harmless
to humans and marine life.
||The installation of the TWIN-f® system is
quite simple and straight forward. It can easily be self-installed
in 60 minutes (per pair). You do not need to make any
through hull fittings installation. All installation is
done on the inside of your boat hull, below the water
line with Epoxy.
Once the installation is complete, your ultrasonic system
is ready to operate off your 24 volt DC on-board battery
system. The operation is automatic. You set it ON and
forget about it. There is no need for any maintenance.
The TWIN-f® ultrasonic system will :
Reduces algae, micro and macro bio-film and barnacle
build-up Improves antifouling performance.
Extends the period between cleaning
Reduces drag, maximises fuel economy and boat speed
Cost effective, reduces down-time and maintenance
Reduces fuel consumption