The award-winning oneTANK, an ERMA FIRST company, is being hailed as “a game-changer” for workboats, superyachts and more.
According to ASR president Peter Gianopulos, oneTANK treats ballast water within the vessel’s own ballast tank, and has no filters, ultraviolet lamps, or electrolytic chlorine generators. “Its footprint is a remarkable four square feet—half the size of its nearest competitor—and its power consumption is similar to that of a household washing machine.”
The system uses readily available chemicals that can be purchased from suppliers worldwide—a 8.25% or 12.5% sodium hypochlorite (bleach) and 30% sodium thiosulfate solution. “Ballast water is automatically treated by applying and mixing the bulk chemicals in-tank,” Gianopulos continued, “allowing users to treat on their own schedules and avoid busy in-port times.”

ERMA FIRST’s managing director, Konstantinos Stampedakis, called it “a game-changing ballast water treatment technology. It’s compact, simple-to-use, and fully automated. It delivers a quick-to-install additional solution for small ballast tanks on big ships, as well as a standalone solution for small vessels such as yachts, tugs, and offshore support vessels.” Application is practical for smaller vessels—a 20-liter container of 12.5% bleach will treat approximately 288 cubic meters of ballast water. For larger vessels, oneTANK can treat tanks as large as 4,000 cubic meters.
ASR represents ERMA FIRST in the United States market. ERMA FIRST provides cutting-edge Ballast Water Treatment System solutions that set the standard for effective ballast water treatment with superior operational readiness, build quality and ease of use. ERMA FIRST acquired oneTANK in July 2021.
“Invasions of non-native species damage the marine ecosystem in many areas they are found,” Gianopulos noted. “But traditional ballast water management systems may not be feasible for workboats, tugboats, semi-submersibles or superyachts, many of which will be required to comply with the BWM Convention. ASR is proud to offer oneTANK as a solution. It’s simple, reliable, economical, and compliant with international regulations. Best of all, oneTANK uses no exotic materials, no filtration, no transformers or rectifiers.”
Click here to learn more about oneTANK.
For more information, please visit www.asrny.com/onetank-bwts