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www.sea-technology.com February 2016 / st 5 The Worldwide Information Leader for Marine Business, Science & Engineering SEA TECHNOLOGY® ©Copyright 2016 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 offces. Subscrip- tions may be purchased at the following rates: domestic, $60 one year; $80 two years; foreign air mail, $133. 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. Canada Publications Number 41450540. Canadian return address MSI Worldwide Mail, P.O. Box 2600, Mississauga, ON L4T 0A8, Canada. 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. Editorial .......................................................7 Soundings ...................................................9 Capital Report ...........................................49 International ..............................................51 Ocean Business .........................................53 Navy Currents ...........................................55 Product Development ...............................56 Offshore Oil & Ocean Engineering ............58 Environmental Monitoring .........................60 Ocean Research ........................................62 Marine Electronics .....................................64 Marine Resources ......................................66 Books ........................................................68 Meetings ...................................................69 Contracts ...................................................70 People .......................................................71 ST Looks Back ...........................................72 Soapbox ....................................................73 Professional Services Directory ..................74 Advertiser Index ........................................78 COVER — A NOBSKA MAVS 3D acoustic current meter measured temperature and oxygen fux across a coral reef in the Florida Keys to determine rates of respira- tion and bio productivity by the reef and its response to ocean acidifcation. (Photo Credit: NOBSKA) NEXT MONTH — K-Observer for port monitoring ... SharpEye radar technology ... Soil and water assessment tool in the Guadalquivir River ... Conference Preview: OCEANS'16 MTS/IEEE Shanghai. February 2016, Volume 57, No. 2 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 MULTIPLEXERS AND TELEMETRY SOLUTIONS FOR UNDERWATER TECH Jes Højlund and Dr. Ole Aarup Mikkelsen (MacArtney Group) outline the NEXUS multiplexer telemetry system. 15 STUDYING UNDISTURBED PARTICLE FIELDS IN THE OCEAN Dr. Michael Twardowski, Dr. Jim Sullivan and Dr. Fraser Dalgleish (Harbor Branch Oceanographic Institute) discuss a novel instrument suite and how it will help particle measurement accuracy. 21 ARVOR-CM: A MULTISENSOR COASTAL PROFILING FLOAT Xavier André, Vincent Dutreuil and Serge Le Reste (Ifremer) explain the real-time monitoring of biochemical parameters in coastal seas using the Arvor-Cm. 27 OCEANOLOGY INTERNATIONAL 2016 – Conference Preview 35 ACTIVE HEAVE COMPENSATION FOR WINCHES, CRANES Dr. Darren Hammersland-White and Rolf Krogh Hjelmeland (Scantrol) looks at how AHC retroftting on existing equipment increases vessel operational time. 39 EDGETECH: CELEBRATING 50 YEARS IN UNDERWATER TECHNOLOGY – Company Profle 44 LONG-TERM ACCURACY, STABILITY OF ARGO CTDS Dr. Carol Janzen, Dr. Norge Larson and David Murphy (Sea-Bird) review the Argo program and its success with ever-evolving profling foats.