THE TSURUMI SEIKI CO., LTD. - Connected to the understanding of water since 1928 - We are active in various fields related to water. Designing, manufacturing, supply and maintenance of Oceanographic and limnological equipment. Ocean Manufacturing oceanographic equipment, such as XBT/XCTDs, Oceanographic Winches, Profiling Floats and so on. Dam Reservoirs, Lakes and Marshes, Rivers and Estuaries Various systems for establishment of apparatus for the accurate and stable enable measuring water quality at every dam and river. Atmosphere A system for meteorological observation which is developed and manufactured by Lockheed Martin Sippican, Inc. is prorpsed. T.S.K THE TSURUMI SEIKI CO., LTD.

TSK’s oceanographic sensor technology The Tsurumi Seiki Co., LTD. TSK’s oceanographic sensor technology System coordination Deep Sea Technology Winch Control System Expendable Sensor Technology Conductivity Measurement Technology Head Office / Main Plant Expendable Sensor Factory High Pressure Tank

History of The Tsurumi-Seiki Co., Ltd. 1928 Established at the present location 1935 Officially declared as a designated factory of the former Japanese Navy. 1945 Designated as a supervisory factory of the former Japanese Navy. 1947 Incorporated under the name ‘The Tsurumi-Seiki Kosakusho Co., Ltd.’ 1971 Company name was changed to ‘The Tsurumi-Seiki Co., Ltd.’ 1981 Established ‘TSK AMERICA INC.’ in Seattle, Washington as a corporation in the U.S.A. 1987 Built the Shirakawa plant in Fukushima Prefecture 1999 Granted ISO9001 approval 2003 Expanded the Shirakawa plant 2009 Built the new building of head office at the present location 2010 Established TSK Liaison office in India

Shirakawa Factory and XBT products The Tsurumi Seiki Co., LTD. Shirakawa Factory and XBT products Dawn of the expendable sensor technology at TSK has begun in 1970. In 1987 built a factory in Shirakawa, Fukushima Prefecture for the manufacture of the expendable products. Its establishment is successful in enriching capability of the expendable sensor production and in enhancing quality assurance system. Shirakawa Plant Our XBT products such as probes, launchers and data acquisition euqipments are basically designed and quality controlled on techniques which is licensed from Sippican.

Launcher / Data Processing units The Tsurumi Seiki Co., LTD. Launcher / Data Processing units TSK has its own launcher or data processing device for XBT measurement. Hand-Held Launcher Digital Converter MK-130 XBT and XCTD TSK Original Strip-Chart Recorder MK-2A Deck-Mount Launcher Digital Converter MK-100 XCTD only TSK Original Strip-Chart Recorder MK-2S TSK Original Thru-Hull Launcher Digital Converter MK-150 XBT and XCTD TSK Original XBT Converter MK-30 XBT only TSK Original Automatic Launcher TSK original Digital Converter MK-30N XBT only TSK Original Digital Converter MK-150N XBT and XCTD TSK Original * Converters require PC for data processing.

The Tsurumi Seiki Co., LTD.