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The Environment volume was 10 tons of water in 80-ton sludge tank. The volume of SpillRemed (Marine) added was 55 gallons and no aeration was provided. The ship staff reported that there was no visible reduc- tion of oi l. It was also ascertained from the ship that the residence time for reme- diation by SpillRemed was just four days with fresh additions of waste oil during the period. It is obvious that there was no time given for bacteria in SpillRemed to interact with the bilge oil before it was discharged to the port receiving facility. Unfortunately, the trials were not con- tinued and it is believed that if the reme- diation was carried out in the bilge tank containing OWS the amount of oil would have been reduced considerably and load on the OWS would also have been less. Cost Evaluation In the case of bilge water treatment using SpillRemed (Marine) there is nei- ther installation cost nor any cost of transportation of wastewater. Bilge water is treated at the site itself and if the residence time of bilge water is ade- quate, the bilge water can be treated on the ship itself. Unlike bilge water transport cost, which consists of both oil and water, cost of SpillRemed (Marine) is based on the concentration of oil only. One gal- lon of SpillRemed can treat 10 gallons of oil and works out to be less than $1 for every liter of oil. It is estimated that bilge water would contain about 10 percent oil of the total volume. Computing this value would indicate the total cost of treatment of bilge water employing SpillRemed (Marine) even on shore in centralized systems. There is neither need of transportation of wastewater nor any liability when the oily wastewater is treated with Spill- Remed. SpillRemed can thus contribute directly in a most cost effective manner in reducing the oil pollution at source either in the ship itself or at the shore receiving facilities. Acknowledgements We would like to express our gratitude to I. Mikedis, Superintendent Engineer, Celebrity Cruises for giving us an opportunity in conducting a shipboard trial. We would like to thank the ships Chief Engineer Georgios Mylonakis for providing samples of bilge for bench scale studies and also providing facili- ties during trials of SpillRemed (Marine). We would like to take this opportunity to thank all the members of the engineer- ing department for their help and encouragement during trial period. Trials on the ship could not have been initiated but for the evaluation of com- patibility of SpillRemed (Marine) with MarineFloc Oil Water Separators by Martin Gombrii of the manufacturing company in Sweden. We are grateful to the company for conducting the evalua- tion without any cost. We are thankful to Alan Tweten, Pres- ident Aquatech Enviro Sys Ltd. for his help in conducting trials on the wooden boats and providing with a sample of bilge water for analysis. Also, Glen Phillip, Owner of Celtic Charter Services for his help in evalua- tion of SpillRemed on Aluminum boats in California. Circle 243 on Reader Service Card or visit www.maritimereporterinfo.com BALLAST EXCHANGE - Minimizing transfer of unwanted organisms Transfer of invasive species like bacteria, plankton, invertebrates, spores, eggs, larvae etc from one biotope to another is considered to be one of the major threats to the ocean. Kockum Sonics newly developed concept Ballast Exchange is an important tool when minimizing transfer of unwanted organisms by ships ballast water. LoadRite" and LEVELMASTER* Ballast Exchange function assists you in safely and efficiently carrying out ballast exchange process as per IMO Resolution A.868(20). Kockum Sonics Ballast Exchange function helps you to save the environment! Please contact us for more information. (((•))) Kockum Sonics d LEVELMASTER are registered is of Kocku n Sonics AB. Specifications arc subject to change without notice. Corporate headquarters: Kockum Sonics AB Malmo, Sweden Tel: +46(0)40 671 88 00 Fax:+46(0)40 21 65 13 E-mail: info@sonics se Kockum Sonics, Russia St. Petersburg, Russia Tel +7(812)567 70 04 Fax: +7(812)567 70 04 E-mail: loadrrte@sonics.ru Kockum Sonics LLC Kenner, L A. U.S.A. Tel +1(504)466 9740 Fax' +1 (504)466 9792 E-mail: Kockumsusa @msn.com www.kockumsonics.com Kockum Sonics (UK) Ltd Leighton Buzzard, UK Tel:+44(0)1525 85 2323 Fax'+44(0)1525 853505 E-mail. KockumSonicsUKLtd ©compuserve.com Kockum Sonics AG DObendorf, Switzerland Tel: +41 (01) 820 31 91 Fax:+41 (01)821 26 52 E-mail office© kockumsonics.ch www.kockumsonics.ch Circle 233 on Reader Service Card or visit www.maritimereporterinfo.com 28 Maritime Reporter & Engineering News A unique synthetic composition and the incorporation of solid lubricants, ensures Orkot®Marine Bearings operate with an exceptionally low co-efficient of friction in seawater, grease, oil and even in dry-running conditions. •High load tolerance - for applications including crane mast bearings and cylinder rod-end bearings. •Water lubricated - for rudder and propeller shaft bearings. • Low friction - suited to hatch cover pads and stabilizer bearings. 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