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62 st / July 2014 www.sea-technology.com SeaTag-MOD PSATs in use To Study Trout in Lake Superior The Michigan Department of Natu- ral Resources, in conjunction with the University of Wisconsin-Milwaukee and the U.S. Fish and Wildlife Ser- vice, has deployed a number of pop- up satellite tags (PSATs) to study lake trout (Salvelinus namaycush) move- ment in Lake Superior. This is the frst large-scale study of any freshwater fsh in Lake Superior using PSATs. It came about through use of Desert Star Sys- tems' (Marina, California) innovative release mechanism that can work in both fresh and saltwater. SeaTag-MOD PSATs will collect data to help shed light on the basis of depth selection and preference among fsh, diel verti- cal migrations and spawning sites. The SeaTag-MOD will estimate lati- tude and longitude locations through use of a magnetometer and solar-cell light sensor. In addition, the tag re- cords depth, temperature and accel- eration values. On the programmed date, the tag will pop off the fsh, foat to the surface and transmit its location via satellite. The researchers will then attempt to locate and recover the tag to download the raw sensor recordings. Otherwise, the data will be transmitted through the Argos satellite system. MX Aquatic Habitat Echosounder To Locate, Map Eelgrass Dr. Sandy Wyllie-Echeverria of Fri- day Harbor Laboratories at the Uni- versity of Washington chose BioSon- ics (Seattle, Washington) MX Aquatic Habitat Echosounder to locate and map eelgrass (Zostera marina) shoots in Portage Bay on the Lummi Nation Reservation as part of a course she is co-teaching. The class is learning about different methods to remotely sense eelgrass presence and distribu- tion. MX Echosounder also allows for accurate measurement of canopy height, percent coverage, and maxi- mum and minimum depth limits of eelgrass growth. Students will use GIS software to create a map showing the quantitative distribution of eelgrass. They will in- corporate georeferenced aerial photog- raphy from three different time periods spanning 13 years. The class will also conduct eelgrass stem density surveys on the tide fats to ground truth data acquired using aerial photography and the MX Echosounder. As a fnal prod- uct, the class will input all data into an Esri (Redlands, California) ArcGIS pre- sentation describing eelgrass distribu- tion patterns at the site. Finnlines Vessels to get PureSOx Systems for Upcoming ECA Four Alfa Laval (Lund, Sweden) PureSOx systems have now been or- dered by Finnlines (Helsinki, Finland), whose Baltic Sea and North Sea opera- tions will fall within an Emission Con- trol Area (ECA) as of January 2015. RoRo and Ropax vessels from Finn- lines offer services from Finland to Germany, North Sea ports, Spain and via the Åland Islands to Sweden, as well as from Germany to Russia. "In just a few months, having a scrubber like PureSOx on board will give these vessels an immediate fuel- cost advantage over competitors who switch to distillates," said René Diks of Alfa Laval. Alfa Laval will fulfll the Finnlines order in late 2014. The PureSOx sys- tems for all four Finnlines vessels are designed for open-loop operation with seawater, which means they are sized for the low alkalinity of the Bal- tic Sea. n ARGENTINA AUSTRALIA AUSTRIA AZERBAIJAN BANGLADESH BELGIUM BELIZE BERMUDA BOTSWANA BRAZIL BRITISH WEST INDIES BRUNEI BULGARIA CANADA CANARY ISLANDS CENTRAL AFRICAN REP. CHANNEL ISLANDS CHILE CHINA COLOMBIA COOK ISLANDS COSTA RICA CROATIA CUBA CYPRUS CZECH REPUBLIC DENMARK DOMINICAN REPUBLIC ECUADOR EGYPT ENGLAND ESTONIA FAEROE ISLANDS FIJI FINLAND FRANCE GERMANY GHANA GREECE HONDURAS HONG KONG ICELAND INDIA INDONESIA IRAN IRELA ND ISRAEL ITALY JAMAICA JAPAN JORDAN KAZAKHSTAN KENYA KOREA KUWAIT LAOS LATVIA LITHUANIA MACEDONIA MALAYSIA MALDIVES MALTA MAURITIUS MEXICO MONACO MOROCCO NORTHERN IRELAND NAMIBIA NETHERLANDS NEW CALEDONIA NEW ZEALAND NICARAGUA NIGER NIGERIA NORWAY OMAN PAKISTAN PERU PHILIPPINES POLAND PORTUGAL QATAR REPUBLIC OF CHINA REPUBLIC OF KOREA REPUBLIC OF PANAMA ROMANIA RUSSIA SAUDI ARABIA SCOTLAND SERBIA SINGAPORE SLOVENIA SOLOMON ISLANDS SOUTH AFRICA SPAIN SRI LANKA SWEDEN SWITZERLAND TAIWAN THAILAND TONGA TRINIDAD & TOBAGO TUNISIA TURKEY TURKS & CAICOS ISLANDS UKRAINE UNITED ARAB EMIRATES UNITED STATES URUGUAY VENEZUELA VIETNAM WALES WEST INDIES