Client participation in ultrasonic box-cooler protection research

Shipsonic has initiated -or is involved in- different research programmes. Box-cooler protection 30% reduction Our main research focus is on ultrasonic anti-fouling protection of box-coolers. In this research we work closely together with Blokland NonFerro (amongst others). For any clients interested in testing our new methods of protecting box-coolers, we offer a 30% reduction on[…]

HAM 317; installation video HDS40 on sea-chest

Sea-chest installation One of our earlier bigger professional installations was on the HAM317, a trailing suction hopper dredger owned by Van Oord. We installed 4 transducers of 50 Watt each to protect the sea-chests. In the video we still show the old installation method, with threaded rings.               New[…]

OSV Sjoborg; fourth round of testing on box-coolers

Skansi Skansi is a shipping company very keen on innovation and experimentation. Shipsonic has installed various systems for box cooler protection on 2 of their off-shore vessels, the Saeborg and the Sjoborg. First round of trials We started in 2016 installing a number of HDS (Heavy Duty) systems to protect the sea chests and -indirectly-[…]

MV Saffier; ultrasonic anti-fouling system installed on box-coolers of deBockMaritiem vessel

              Client installation The Saffier was equipped with  an HDS40-100. That is 4 x 100 Watt transducers. Maintenance staff made use of regular maintenance -and cleaning- of the box coolers to install the ultrasonic anti-fouling system. Clean start After all, an ultrasonic anti-fouling system requires that the box coolers[…]

Fangst; diving inspection of ultrasonic protection of hull of Norwegian fishing vessel

The vessel The Fangst is a 14 meter Norwegian fishing boat. It is active in the North Sea and the Barents Sea.                   The ultrasonic system The Fangst has been equipped with 2 control-units HDS20. That makes 4 transducers all together. The transducers are evenly spread, glued[…]

Ikigai; customized transducer mounting for Vitters Shipyard

Ultrasonic anti-fouling technology for Vitters Shipyard Shipsonic™ delivered the ultrasonic anti-fouling technology to one of the internationally renowned Dutch superyacht builders Vitters Shipyard. Transducer mounting challenge While finishing the rebuild of sailing yacht Ikigai, Vitters contacted Shipsonic for a Marine Growth Prevention System for their seawater strainers. The seawater strainers are tailor made. No flat surfaces[…]

Invitation to visit us at the Maritime Industry 2018 tradeshow

Shipsonic at Maritime show   Please contact us ( or phone: +31 6 1936 0670) if you would like to get a free entrance ticket to visit us at the 2018 Maritime Industry tradeshow in Gorinchem, The Netherlands on 29, 30 or 31 May.   delta-sistems B.V / Shipsonic™ will be present at stand H126.1 Maritime Industry 2018 The Netherlands on 29,[…]

Platform Supply Vessel Bourbon Front

Bourbon Front

            Installation The Bourbon Front is a Platform Supply Vessel (PSV). The ultrasonic anti-fouling system installed comprises 8 transducers. They are installed on the sea-chests. The installation dates from November 2014. It concerns transducers of 50 Watt, still installed using metal threaded rings. Other Bourbon installation Shipsonic has installed 2[…]

Beyond; first installation with different transducers on 1 sea-chest

System with 50 Watt and 100 Watt transducers   The Beyond is a bunker tanker operating from Singapore. An HDS40 was installed, but with 2 sets of different transducers. We installed 2 transducers of 50 Watt and 2 transducers of 100 Watt. The transducers were installed on the sea-chests.     Advantages of different transducers[…]

Ultrasonic anti-fouling on sluice gates

Delta-sistems has been part of a consortium that tendered for the rebuild project of a big sluices complex in the Netherlands. For this project, we developed a system of mounting transducers under water on the sluice doors and control them through a programmable logic controller (PLC), in a large, air-conditioned control unit. Unfortunately, our consortium[…]

Interview delta-sistems B.V. / Shipsonic in the April 2017 issue of Professional Mariner magazine

Ultrasonic antifouling grows as ‘green’ option for vessel owners

by Susan Buchanan,

Introduction by Susan Buchanan

By using sound waves, ultrasonic antifouling can prevent the growth of algae, barnacles and slime on boat hulls and interiors, and can protect sea chests and box coolers as well. The technology has been employed internationally from Europe to Australia, Japan, Chile and the Caribbean, and implemented on commercial, military and recreational vessels. More recently, these systems have caught on with yacht owners in North America. Fouled, rough hulls can slow boats and increase fuel consumption, and antifouling paints — while effective — can release toxins when a vessel is in the water or when coatings are scraped off in dry dock. Usage of ultrasound has grown following the International Ultrasonic antifouling grows as ‘green’ option for vessel owners by Susan Buchanan Maritime Organization’s ban over a decade ago on organotin in bottom paints, and because of moves to limit copper as an antifouling agent. Ultrasonic systems don’t rely on chemicals that can harm fish and mammals or pollute the air, and they can reduce vessel liftouts for cleaning. The cleaning abilities of sound waves have been recognized since before World War II. Starting in the 1950s, sound waves were utilized for this purpose in the food, agriculture, electronics, medical, aircraft and auto industries. While ultrasound’s marine applications have been acknowledged for decades, usage by commercial vessel operators has only gained traction in the past 15 years. To install a system, transducers are trends & currents Courtesy U.S. Coast Guard 37 antifouling can keep weeds, barnacles and mussels away without hazardous chemicals, cathodes or paints, (and) with no expensive lift-outs, scraping, high-pressure cleaning or the subsequent disposal of poisonous wastewater.” Impressed current antifouling (ICAF) systems typically use a copper alloy rod to prevent fouling and an aluminum or ferrous alloy rod to reduce corrosion, along with a power unit. Introduced to the market in 2008, NRG Marine’s Sonihull systems produce multiple pulses of ultrasonic energy in a range of targeted frequencies. These pulses are transmitted through the material to which the mounted inside a vessel’s hull, or on other internal features, along with a control box. Onboard generators or shore sources power the equipment.

Susan’s  interview with delta-sistems’ Chiel de Wit:

For commercial users, the most common application of ultrasonic antifouling is protecting sea chests, bucket strainers, box coolers, intakes and piping for dry plate cleaners, said Chiel de Wit of delta-distems BV in the Netherlands. “In smaller vessels, we can also protect the hull,” he said.


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