HIGH QUALITY UNDERWATER HULL CLEANING SERVICES
Optimize vessel performance and drastically reduce fuel consumption with BEVALDIA’s premier underwater hull cleaning services.
Our certified commercial diving teams use advanced technology to remove marine biofouling effectively, ensuring your fleet maintains peak speed and hydrodynamic efficiency without dry-docking. Whether you require routine maintenance or urgent fouling removal, we deliver rapid, solutions globally.
Explore our operational network below to find our underwater hull cleaning teams in your next port of call.
- Greece: Piraeus, Agioi Theodoroi, Chios, Lavrio, Elefsina, Neos Molos Drapetsonas, Perama, Kali Limenes, Katakolo
- Cyprus: Limassol, Vassiliko, Larnaca
- Spain: Algeciras, Valencia, Tarragona, Las Palmas, Canary Islands, Castellon, Ceuta.
- Netherlands: Rotterdam, Amsterdam
- Belgium: Ghent, Antwerp
- Estonia: Tallinn
- United Kingdom: Portland
- Malta: Malta OPL anchorage
- Denmark: (Skagen, Kalundborg)
- Norway: Sundarora
- Togo: Lome
- Ivory Coast: Abidjan
- Guinea: Kamsar, Conakry
- Nigeria: Lagos, Port Harcourt, Warri, Calabar
- Egypt: Suez, Port Said, El Dekheila, Alexandria, Damietta
- Ghana: Tema, Takoradi
- South Africa: Durban
- Senegal: Dakar
- Cameroon: Douala
- Benin: Cotonou
- Indonesia: Bunati, Semarang, Surabaya, Karang Jamuang, Taboneo, Balikpapan, Tanjung Priok
- China: Hong Kong, Fangchenggang, Qinzhou, Zhuhai, Nansha, Shekou, Yantian, Zhanjiang, Yangjiang, Xiamen, Tianjin, Qingdao, Rizhao, Lianyungang
- Singapore: Singapore Anchorage
- South Korea: Yeosu, Inchon, Boryeong, Onsan, Gwangyang, Pohang, Geoje
- UAE: Fujairah, Dubai, Sharjah, Khor Fakkan, Jebel Ali
- Malaysia: Klang, Matadi
- Panama: Balboa
- Brazil: Santos, Salvador, Aratu, Angra Dos Reis, Belem, Paranagua, Fortaleza, Etaqui, Praia Mole
The activity of BEVALDIA stands as a strong example of rapid, healthy expansion in the maritime sector. Our company employs experienced and well-trained diving teams providing underwater repair, hull maintenance, and a full range of wet services required by ships worldwide.
OBJECTIVES
The main objective of BEVALDIA, is the continuous enhancement and development of money saving choices that it ensures its customers.
Towards this direction, the most effective solution in saving money is the underwater hull cleaning. “Clean ship’s Hull means, reduction of fuel consumption, reduction of CO2 emissions, increase of ships speed.” “Fouled ship hulls increase the overall cost, causing increased fuel consumption and the emission of gaseous pollutants. The engines are strained as well as the propulsion system, the ship slows down.
We provide high quality u/w hull cleaning services (UW hull cleaning) ensuring the customer a prolonged period away from ship’s drydock, saving time and money.”
FOULED SHIP HULL
One of the biggest problems facing the world shipping is fouled ships hulls. 1746 different species of marine organisms have been counted up, which attach to submerged surfaces. Like shellfish, seaweed, sea moss and hydroids, which clog the underwater intakes, covering antifouling paint and creating a thick layer on the ship’s hull which in time destroys and affects its “good” function. Shellfish such as oysters and mussels, release millions of young bivalves in the water, which move with the help of the ocean currents. The young bivalves to enable to feed themselves adhere to static objects, which attract various species of algae. Ships that are anchored are ideal for the growth of these microorganisms. Typically, these are reduced when the ship is at sail, except for some that are very durable, such as the Brown Weed, which remain on the hull even when the ship is developing rapidly.
CORROSIVE SPECIES
Another very resistant species are algae that secrete a sticky fluid which is highly corrosive, deriving from billions of algae monocytes, which produce syrupy nutritional means, which creates colonies, once installed they reproduce. Thus, a coating of the sticky liquid is created, as a thick layer which remains on the hull as the ship moves.
OUR ADVANTAGE
BEVALDIA undertakes underwater cleaning of all underwater surfaces of the ship:
- Underwater cleaning of sides
- Underwater cleaning of flat
- Underwater cleaning of curves
- Underwater cleaning of the rudder
- Underwater cleaning of the propeller
- Underwater cleaning of the sea-gratings
- Underwater cleaning of the sea chests
THE OUTCOME OF HULL CORROSION
The outcome of fouled hulls is the increase of abrasion resistance of the ship. The increased abrasion leads to speed reduction. Coating with 1mm thickness increases the abrasion by 80% thereby reducing the speed by 15% (Townsin 1987; Lui et al, 1977).
So in order to maintain the same speed greater fuel consumption is required, thereby increasing the cost and the emission of gaseous pollutants. Depending on the type of vessel, fuel can make up about 50% of the operating cost of a ship. It is estimated that the fuel consumption increases 6% for each 100mm increase of speed. The increase in weight of the hull from the fouling has the effect of reducing the hydrodynamic behavior of the vessel, since it lowers the center of gravity of the vessel, therefore affecting its maneuverability.
UNDERWATER CLEANING WITH BRUSH KART SYSTEM
BEVALDIA, provides high quality uw hull cleaning with u/w Brush Kart System ensuring vessel operators that they employ a safe and cost-effective strategy. Our Brush kart system has reached perfection since it is manufactured in our work shop from 1992.
All our service stations are furbished with a new Brush Kart System on a yearly basis; especially manufactured, hydraulic power is differentiated according to seawater conditions and brushes are fabricated based specifically on fouling type, thickness and hardness of barnacles in each area. Prior to an operation, inspection is carried out in order to determine the fouling condition as well as the type of fouling and based on the findings specialized brushes are fitted on the Brush Kart System.
UNDERWATER HULL CLEANING
In water cleaning of the vessel’s hull is a proven cost saving tool for vessel operators. Fouled ship hulls increase the overall cost, causing increased fuel consumption and the emission of gaseous pollutants. The engines are strained as well as the propulsion system, the ship slows down.
ADVANCED SERVICES
The Brush Kart System consists of a steering wheel and a speed control valve which is adjusted by the diver. All our divers have undergone many hours on the job training on our own vessels and when they master the usage of the Brush Kart System they are sent to customers’ vessels. All our u/w hull cleaning systems are constructed by strict specifications so no damage will occur to the hull coatings.
HYDRAULIC HULL CLEANING SYSTEM
The hydraulic hull cleaning Brush Kart System comprises of 3 units of brushes that retract fully from the hull with a clearance to prevent damage on the paintwork coating while removing unwanted fouling and corrosion efficiently.
FOULED SHIP HULL
The fouled hulls and propellers strain the engines and can lead to engine problems, since the hydrostatic shape of the hull and propeller changes, the vibration is increased. The cleaning of the hull ensures increased speed, reduction of fuel consumption and reduction of gaseous pollutants. Our company BEVALDIA provides underwater ship cleaning services using specialized last technology equipment.
The hull cleaning machine Brush Kart BEVALDIA comprises of three units of brushes that retract fully from the hull with a clearance to prevent damage on the paint coating. The brushes used for the underwater hull cleaning are from wire, INOX or nylon. The nylon brushes are appropriate for the protection of the hull paint for soft fouling but are not used in the cases that the hull has shellfish. The machinery for hull cleaning (uw hull cleaning) Brush Kart BEVALDIA, ensure high productivity, speed and low cost. The underwater propeller cleaning is done with special brushes and then polished with diamond disc pads.
ABOVE WATERLINE CLEANING
BEVALDIA disposes specialized teams and can clean fouling above the vessel’s waterline simultaneously with hull cleaning operations. Learn more by clicking here.
CASE STUDIES
Looking for a reliable partner for Underwater Hull Cleaning?
Looking for a reliable partner for Underwater Hull Cleaning?