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www.sea-technology.com October 2017 / st 5 The Worldwide Information Leader for Marine Business, Science & Engineering SEA TECHNOLOGY® ©Copyright 2017 by Compass Publications, Inc. Sea Technology (ISSN 0093-3651) is published monthly by Compass Publications, Inc., Suite 1010, 1600 Wilson Blvd., Arlington, VA 22209; (703) 524-3136; FAX (703) 841-0852. All rights reserved. Neither this publication nor any part of it may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior permission of Compass Publications Inc. Periodicals postage paid at Arlington, Virginia, and additional mailing offices. Subscrip- tions may be purchased at the following rates: domestic, $60 one year; $80 two years; foreign air mail, $136. Single copies $4.50 plus shipping and handling (current issue only). POSTMASTER: send address changes to Compass Publications, Inc., P.O. Box 600, Deer Isle, ME 04627-0600. CUSTOMER SERVICE, Tel. 1-800-989-5253 or 1-207-348-1057. For more information on these news items, visit our website at www.sea-technology.com. COVER — A surface buoy is deployed at the Ocean Observatories Initiative Pioneer Array and loaded aboard the RV Neil Armstrong in Woods Hole, Massachusetts on June 4, 2017. Buoy-mounted sensors mea- sure a suite of meteorological and upper ocean variables. Solar panels and wind turbines provide power for the buoy and subsurface instrumentation. Telemetry systems transfer data to shore and allow shore-side command and control. (Photo Credit: Kyle Covert: Woods Hole Oceanographic Institution) NEXT MONTH — Radar calibration and signal analysis ... U.S. Navy unmanned systems ... S5900 side scan sonar for mine countermeasures ... Hearing assessment tech for sailors ... Speciality chemicals to treat oil spills and prevent corrosion ... FutureWaves measures and forecasts ocean waves for seabasing defense ap- plications ... Lithium ion Fault Tolerant (LiFT) system for energy storage and delivery ... Autonomous marine vehicles to sample biological, chemical parameters in Svalbard Archipelago to understand climate change ... Conference preview: CLEAN GULF. Let's cut the cable. Teledyne Benthos ATM-900 Series Acoustic Telemetry Modems are the culmination of over twenty years of experience in the design and manufacture of advanced acoustic communication technology, ensuring the success of your next mission. From shallow water to the depths of the ocean, Teledyne is there to deliver proven a-comms solutions. www.teledynemarine.com We bring advanced wireless communication capabilities to these platforms: Subsea Vehicles Divers Sensors Positioning Acoustic Releases Contact us today to learn how we can assist you! +1-508-563-1000 or benthos@teledyne.com www.benthos.com OCTOBER 2017, Volume 58, No. 10 Visit our website at www.sea-technology.com for online versions of feature articles and news departments. The editorial staff can be contacted at oceanbiz@sea-technology.com. 10 MEASURING NITRATE IN PUGET SOUND USING OPTICAL SENSORS Kim I. Martini, Ian D. Walsh and Charles W. Branham (Sea-Bird Scientific) detail the use of the SUNA optical nitrate sensor for nitrate measurements without wet chemistry. 15 INTERNATIONAL WATER CONFERENCE — Conference Preview 17 AUV FLEET STREAMLINES OFFSHORE OPERATIONS Joshua Broussard (Ocean Infinity) addresses the challenges of using multiple autonomous vehicles to streamline operations for seabed geophysical data acquisition. 23 SUSTAINABLE OCEAN SUMMIT — Conference Preview 27 INTERNATIONAL WORKBOAT SHOW — Conference Preview Editorial .......................................................7 Soundings ...................................................9 Capital Report ...........................................29 International ..............................................31 Ocean Business .........................................32 Ocean Research ........................................34 Navy Currents ...........................................35 Product Development ...............................36 Offshore Oil & Ocean Engineering ............38 Environmental Monitoring .........................40 Marine Resources ......................................42 Marine Electronics .....................................43 Contracts ...................................................44 Meetings ...................................................44 Books ........................................................45 People .......................................................46 ST Looks Back ...........................................46 Soapbox ....................................................47 Professional Services Directory ..................49 Advertiser Index ........................................50