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water, fresh water, and rivers with high sediment create extreme chal- lenges for ballast water treatment technology, particularly for the filtra- tion system. High sediment and organism content can easily causeplugging and can overwhelm a filter?s self-cleaning process. The result is stopping the ballasting process while filters are manually cleaned. To avoid this, the Hyde GUARDIAN includes unique stacked disk filters,which automatically backwash withhigh pressure water jets when needed. Short(er) ballast holding time: Passenger ferries, offshore supply ves- sels and small cargo vessels often operate on short trade routes, requir- ing frequent ballast operations. This requires a BWT process that effective- ly kills the organisms without requir- ing residency time in the tanks. UV disinfection inactivates organisms by destroying their DNA as the water flows through, but does not change the water in any way so it can be dis-charged at any time. The latter point is especially critical in terms of dis-charging in U.S. waters, in light ofthe new, proposed EPA VGP. Cold Weather (Arctic) Ops: Vessels operating in northern cli- mates, on the Great Lakes, and those designed to support Arctic oil E&P operations must be capable of ballast-ing in cold water conditions. Unlike electro-chlorination, medium pres- sure UV is not affected when the water temperature drops below approximately 5 degrees C. Environmentally Sensitive Areas & OPS: Smaller vessels often operate in remote, unique ecological locations, intensifying the need to minimize risks of pollution. Oil and Gas opera- tions are pushing into more remote and pristine environments while Research vessels, small passenger and expedition yachts operate in locationswhere protection of the ecosystem is of utmost concern. RECENTSMALLERHULLORDERSHyde continues to deliver BWT systems even in this challenging financial climate on the waterfront. Recently a Hyde system was delivered to Edison Chouest Offshore for the Icebreaking AHTS that is under con- struction at North American Shipbuilding (Hull 247). Additionally, a Hyde Model HG60 will soon be delivered for retrofit on the "Ranger III," a Small Passenger Vessel operated by the National Park Service (NPS) in Lake Superior. mmÜÜWW==EEPPPPTTFFOOPPTTJJRRMMNNNN ccññWW==EEPPPPTTFF==UUPPTTJJTTTTUURRbbWW==ÜÜÉÉ~~ÇÇÑÑääììëëÜÜÉÉêê]]~~ÜÜÉÉ~~ÇÇíí~~ååââKKÅÅççããttÉÉÄÄWW==ïïïïïïKK~~ÜÜÉÉ~~ÇÇíí~~ååââKKÅÅççãã ==``ÜÜÉÉããááÅÅ~~ää==ooÉÉëëááëëíí~~ååíí== ==ooììëëíí==CC==``ççêêêêççëëááççåå==mmêêççççÑÑ==== ==llÇÇççêê==ccêêÉÉÉÉ== ==aaììêê~~ÄÄääÉÉ== ==``ççããéé~~ÅÅíí==== ==iiááÖÖÜÜíí==ttÉÉááÖÖÜÜííqqóóééÉÉ==ffff==ppÉÉïï~~ÖÖÉÉ==qqêêÉÉ~~ííããÉÉååíí==mmää~~ååíí==EEppqqmmFFrp=`ç~ëí=dì~êÇ=`ÉêíáÑáÉÇ ~åÇ=fjl=OMNM=^ééêçîÉÇ qqÜÜÉÉááëë==ÅÅççååëëííêêììÅÅííÉÉÇÇ==ççÑÑ==eeÉÉ~~îîóódd~~ììÖÖÉÉ==iiii==mmççääóóÉÉííÜÜÉÉääóóååÉÉ==ììëëááååÖÖ==ííÜÜÉÉ==ããççëëíí~~ÇÇîî~~ååÅÅÉÉÇÇ==ëëíí~~ííÉÉJJççÑÑJJííÜÜÉÉJJ~~êêíí==êêççíí~~ííááççåå~~ääããççääÇÇááååÖÖ==ééêêççÅÅÉÉëëëë==ÅÅêêÉÉ~~ííááååÖÖ==~~==ììååááíí==ííÜÜ~~íí==ááëëWW ==iiççïï==jj~~ááååííÉÉåå~~ååÅÅÉÉwww.marinelink.com MN45MN#3 (32-49):MN 2011 Layouts 3/2/2012 10:28 AM Page 45
