The operating costs of a ship are certainly influenced by fuel costs.
The efficiency of the propulsion depends on several factors. The submerged parts of the ship (hull, propellers, rudder etc.) are directly influenced by the presence of fouling organisms that attack the surface, causing resistance to motion. Therefore, in order to maintain a constant dynamic forward motion at the same speed as a clean hull, fuel consumption and wear of mechanical parts involved in propulsion will increase significantly.
The Cavitcleaner products, aim to achieve maintenance and efficiency of transport by means of an innovative application of cavitation, keeping the submerged surfaces free from fouling organisms.
Using this cleaning system frequently, Cavitcleaner will provide the key to maintaining low costs and the performance of the hull, as close as possible to those after having been launched with a fresh coat of anti-fouling.
UNDERWATER INSPECTION, DESCALING, EFFICIENCY, TIMING, are the key words of diver innovative companies
We continuously observe the technological development for the efficient and safe maritime transport of goods and passengers by investing in the design of increasingly efficient and environmentally friendly vehicles. The complex nature of the environment means this requires adequate and constant maintenance, and accordingly underwater inspections and maintenance help reduce costs and increase safety.
The maritime transport sector is one of the “cleanest”, but the organisms that flourish in the submerged parts reduce performance, increase fuel consumption and in extreme cases increase corrosion, thus putting at risk not only performance, but above all, safety.
LEGAL AND ENVIRONMENTAL FEATURES
IMO (International Maritime Organization), has already defined the amount of antifouling material to be removed during hull cleaning.
Therefore, it is likely that international and local restrictions may be introduced to regulate underwater hull cleaning operations.
The removal of the vegetative mass from submerged surfaces, with the use of brushes/abrasive discs, is prohibited in many European basins.
Since the ‘60’s, technological development and awareness of eco-compatibility has led, to the use of more and an ever increasing range of anti-fouling paints. These are low in pollutants because they eliminate those metals in their composition, such as arsenic and mercury, so effective in the maintenance of a hull, but very toxic to the marine environment.
The study of biological fouling organisms (algae, crustaceans, molluscs, etc..), has demonstrated that the quantity of organisms which grows to an unprotected hull, borders 150 kg per square meter, in about 6 months of exposure. The figures then soar exponentially when applied to surfaces of vessels of large tonnage. (Surrounded area : 40.000 square meters or 6000 tons of vegetation).
Another aspect related to the presence of organisms, on the parts concerning propulsion and steering stability, regards the increase of up to 40% of resistance to motion, reducing speed and increasing the consumption of fuel from as much as 10% to 20%.
This means higher management costs for the transport industry. Extra consumption directly affects the amount of gas released into the atmosphere, gases precisely considered greenhouse such as CO2, NOX, SOX, which appear to be measurably higher.
All this is to be considered if you are referring to the agreements made by the EU Treaty of Kyoto with the prospects of reducing emissions by 2012.
And ‘therefore it is indisputable that, for maximum performance, a hull should be conventionally or technologically (electrified systems) protected and free from scale.
UNDERWATER HULL CLEANING
Traditional cleaning systems used underwater make use of abrasive pneumatically or hydraulically served brushes, which give effective and inexpensive results.
Additionally, the abrasive effect of the brushes used, removes significant layers of ant-fouling paint, with the same dispersion in the environment, and makes the surface more vulnerable to the establishment of organisms.
The same problem has arisen when using jets of water at high pressure (+250 ATM). This is why the Cavitcleaner cavitation technology is a concrete response both to environmental protection and to resolution of problems for ship-owners.
Studies on cavitation fluid have led to the development of new technologies, not only in the military, but especially in the use of cleaners and micro surgery.
In this case, it refers to the cavitation generated by ultrasonic frequencies applied in dentistry and the aesthetic and ophthalmic areas.
This physical phenomenon used in MACRO cleaning, has made possible the construction of a new tool for descaling in the underwater environment, whether inshore or offshore.
In summary, we have adopted the cavitation system, generated the formation of microbubbles in the flow of sea water (no chemical additives). These are not generated by a rise in temperature, but by a DELTA P (pressure difference) which is the difference between flow pressure and steam pressure.
Maintaining this physical instability of the two pressures, at a limited distance from the nozzle (0-8 cm), causes the formed bubbles to collapse, generating a pressure of implosion five times that of the flow impact.(150-750 ATM)
The result is that the micro-bubbles detach the different types of organisms with the implosive force only and not because of the impact pressure, like traditional hydro jets do.
This means removing organic material without removing expensive and chemical laden anti-fouling paint, with an effective cleaning result, in total respect of the environment.
One aspect, not least in importance, refers to the operational safety. When working with low pressures the risk of accidents for the diver is virtually zero, unlike traditional hydro jet methods that use extremely high pressure.
The current system of hull cleaning, considering the low availability and high cost of dry docks, limits the opportunity for operators to do adequate maintenance on their boats/ships.
What Cavitcleaner products offer is not an alternative to traditional docking (which must be done anyway), but it can extend significantly the period of time at sea between lifting / drydocking, and is a complementary method in accordance with current regulations concerning the environment and safety. This maintenance is carried out in that period of transition between one dock and another to ensure that the efficiency of “our” ships meets the expectations of the parameters set by the qualified authorities.
9th AMERICAN WATERJET CONFERENCE 1997, MITCHIGAN
Performance of vessels in relation to sea trials
Diagram of impact greenhouse gas emissions in the sister of climate change
Cavitcleaner Ltd. are proud to have perfected this technology as the benefits to the World’s climate are significant. Furthermore, ship owners and operators of man-made structures in a marine environment can benefit from significantly lower operational costs, and costly downtime of operations.
Contact us at and provide an overview of your present operations, and we will recommend the suitable products that will be suited to your needs.
Cavitcleaner Team up with RPM Nautical Underwater Archaeological Team ( www.rpmnautical.org) to solve long standing issue when ROV’s Attempt to Clear debris from extremely sensitive archaeological sites. The current water jets that have been used for many years always ended up damaging the delicate artifacts, and this led to vital information being lost forever.
The unique properties of Cavitcleaner’s Patented Advanced Underwater Cleaning Technology is allowing for a much more delicate process to be applied, and that which is solving this problem to the delight of the underwater archaeological teams.
To get a better understanding of this collaboration, watch:
Cavit cleaner is proud to be associated with the team and wish them every success in the coming season.
As of today, a new Cavitcleaner products: ECO PHANTOM, ecological and easier penetration and excellent holding capacity in bottoms! These anchors are perfectly adapted to various sea bottoms as mud, sand, Posidonia. Also, the environmental impact is minimal as they do not drag the bottom sea. ECO PHANTOM anchors, in full stainless steel, are in compliance with the EU legislation (Directive 2008/56/EC) concerning the installation of mooring buoy. Indeed the anchorage end does not impede or risk other marine activities, as it just emerges through the bottom sea.
Last weekend It was held the Malta-Ragusa regatta, whose victory was assigned to the vessel Juno (race category) sponsored by Oil Tanking, while, in the Cruiser category, first place went to the boat Elusive II, sponsored by BoV (Bank of Valletta). Both the boats had, unique among the competitors, the Cavitcleaner cleaning treatment before the race. Another success, this time double, determined other than from the undoubted ability of the crew and the hull superiority, also (we are proud to say) from our cleaning treatment.
Revolutionary new way to clean and maintain underwater structures.
No prohibitive lift outs or dry docking.
Improves yacht efficiency and crew safety.
With Cavitcleaner’s unique system, the cleaning action is performed by a cavitation stream. In cavitation, microscopic air bubbles are formed, which implode to create an intense shockwave, which dislodges fouling or biological material. This is highly effective, works rapidly, at relatively low pressures and does not harm the surface being cleaned.
This system is so safe the cavitation stream can come in contact with bare skin without injury. In addition, Cavitcleaner’s unique patented design does not require a retro-jet, which eliminates the risks to a diver’s ears and face.
Cavitcleaner is extremely effective at removing any type of growth or fouling from any underwater surface. In addition, contrary to high-pressure washers and mechanical cleaners (brushtools, blades), Cavitcleaner will NOT damage the underlying surface material and leaves sensitive and fragile paints and coatings intact.
Today, the Cavitcleaner system is available in three versions. At the heart of these three models is the patented Cavitcleaner Pistol, which does not require the use of a retro-jet:
Easy Energy 220, is powered by a single phase 220v electric motor, ideal for light to moderate duty where the convenience and accessibility of 220 voltage is a deciding factor (also available in 110V). This model can be plugged in at any marina pontoon or driven by a simple 4kw generator.
Easy Energy 380, is powered by a three phase 380v electric motor. This is the professional diver’s workhorse, powerful enough to operate two Cavitcleaner guns at once. Ideal for environments where three-phase power is readily available and is the energy source of choice.
Hot Road Diesel, is driven by a powerful and reliable Yanmar 8kw diesel engine. Preferred by professional divers for its reliability, power, fuel economy and convenience where there is no ready access to a source of electricity. This model can also power two Cavitcleaner guns simultaneously.
The future of underwater cleaning
Thanks to the obvious advantages in terms of cleaning power, safety, ease of use, performance and cost effectiveness, cavitation-based systems are set to become a predominant choice in the growing market for underwater cleaning.
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