Sea Technology

JUL 2017

The industry's recognized authority for design, engineering and application of equipment and services in the global ocean community

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www.sea-technology.com July 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. Editorial .......................................................7 Soundings ...................................................9 Capital Report ...........................................39 International ..............................................40 Ocean Business .........................................42 Navy Currents ...........................................44 Product Development ...............................46 Offshore Oil & Ocean Engineering ............45 Environmental Monitoring .........................54 Marine Resources ......................................52 Marine Electronics .....................................56 Ocean Research ........................................48 Soapbox ....................................................61 Marine Renewables ...................................50 Meetings ...................................................58 Contracts ...................................................57 People .......................................................59 ST Looks Back ...........................................60 Professional Services Directory ..................75 Advertiser Index ........................................78 COVER —Global Diving & Salvage lifted, refloated and towed the derelict Helena Star from Tacoma, Washington, to be recycled by the Washington State Department of Natural Re- sources. (Photo Credit: Global Diving & Salvage) NEXT MONTH —Current, ice measurements in Cook Inlet, Alaska ... Aquaculture cage with copper-alloy net for better fish health ... Low-cost drilling for deep-sea minerals explora- tion ... ADCPs for measurements in South American aquaculture ... The latest wave and tidal energy tech development in China ... Advanced weather data analytics for safe site surveying and inspection with UAVs, emergency/disaster response and protecting assets ... Conference previews: OCEANS'17 MTS/IEEE Anchorage and SEG 2017. We provide the broadest range of high performance electrical, optical, and hybrid interconnect capabilities, optimized for use in mission- critical applications. When the pressure is on, depend on us to keep you connected. www.teledynemarine.com IMAGING • INSTRUMENTS INTERCONNECT • SEISMIC • VEHICLES JULY 2017, Volume 58, No. 7 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 THE RENEWABLES INDUSTRY CAN LEARN FROM OIL AND GAS John Deasey (Trelleborg Offshore) explains how knowledge transfer can accelerate renewables development. 14 SCOUTING FOR ENERGY CABLE ROUTE FOR AN ISLAND OFF RIO César Félix (freelance), Dr. Arthur Ayres Neto (Universidade Federal Fluminense) and Dr. Luiz Antonio Pereira de Souza (Institute for Technology Research) recount a multifrequency, high-resolution seismic survey for cable planning. 17 NEW-GENERATION CABLE TRANSITS ACCOMMODATE WIRELESS INTERNET Ruben Wansink and James P. Stahl (STI Marine) introduce modern cable transits for structured cabling systems on cruise ships. 19 A NEW APPROACH TO PRESSURE TOLERANCE Vincent Lefebvre (Energy Sales Inc.) and Terry Conrad (Sealand Innovations LLC) discuss a deepwater battery that eliminates the need for additional pressure housing. 23 LI-ION BATTERIES POWER POLAR RV THROUGH ICE Annie Sennet (Saft) outlines how Seanergy meets the high power needs of the RRS Sir David Attenborough. 28 VESSEL SALVAGE WITH ENVIRONMENTAL CONCERNS Lara Mayer (Global Diving & Salvage Inc.) writes about the Spirit of Sacramento salvage operation that kept a focus on pollution prevention. 31 ROV SAMPLE COLLECTION SKID Jason White and Lance Horn (Undersea Vehicles Program, University of North Carolina Wilmington) detail how to collect scientific samples with an observation-class ROV. 35 ECHOSOUNDER FOR BIOLOGICAL SURVEYS USING OCEAN GLIDERS J. Christopher Taylor (National Center for Coastal Ocean Science) and Chad Lembke (Center for Ocean Technology, University of South Florida) explain how to extend fishery ecosystem assessments to remote places.

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