Kongsberg EA440 Installation Manual
  1. Manuals
  2. Brands
  3. Kongsberg Manuals
  4. Marine Equipment
  5. EA440
  6. Installation manual

Kongsberg EA440 Installation Manual

Single beam hydrographic echo sounder
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
EA440
Single beam hydrographic echo sounder
Installation manual
This manual provides you with information required to install the
Kongsberg EA440 Single beam hydrographic echo sounder.The
information is intended for qualified personnel such as shipyard
engineers and skilled workers.
Caution
The EA440 echo sounder must never be powered up when the ship is
in dry dock. The transducer will be damaged if it transmits in open air.
To prevent inadvertent use of the EA440, disconnect the mains power
whenever the vessel is in dry dock.
392616/B
December 2018 © Kongsberg Maritime AS

Advertisement

Table of Contents
loading

Related Manuals for Kongsberg EA440

Summary of Contents for Kongsberg EA440

  • Page 1 Caution The EA440 echo sounder must never be powered up when the ship is in dry dock. The transducer will be damaged if it transmits in open air. To prevent inadvertent use of the EA440, disconnect the mains power whenever the vessel is in dry dock.
  • Page 2 Kongsberg Maritime disclaims any responsibility for damage or injury caused by improper installation, use or maintenance of the equipment. Disclaimer Kongsberg Maritime AS endeavours to ensure that all information in this document is correct and fairly stated, but does not accept liability for any errors or omissions. Support information If you require maintenance or repair, contact Kongsberg Maritime’s...

  • Page 3: Table Of Contents

    Support information ......................15 PREPARATIONS ..............16 Installation summary......................17 About installation drawings .....................18 Tools, equipment and consumables required for EA440 installation ......18 Where to install the transducer ..................19 Introduction to transducer location.................19 Mount the transducer deep ..................19 Avoid protruding objects near the transducer............20 Keep the transducer far away from the propellers ..........21...
  • Page 4 CABLE LAYOUT AND INTERCONNECTIONS......47 Cable plan ........................48 List of cables ........................49 Installing the EA440 cables .....................50 Connecting one or more transducers to the WBT ..........50 Connecting power and ground to the WBT............54 Connecting the WBT and the Operator Station............55 Connecting a synchronization cable to the Operator Station using an RS-232 serial interfaces ....................55...

  • Page 5: About This Manual

    The manual is intended for technical personnel; such as skilled shipyard workers, electricians, qualified engineers and naval architects. You must also be familiar with the installation of electronic and mechanical products. Online information For information about the EA440 and other products from Kongsberg Maritime, visit our website. https://www.km.kongsberg.com Registered trademarks Observe the registered trademarks that apply.

  • Page 6: Ea440

    EA440 Installation manual EA440 Topics System diagram, page 7 System units, page 8 Scope of supply, page 10 Installation requirements, page 12 Network security, page 13 Support information, page 15 392616/B...

  • Page 7: System Diagram

    EA440 System diagram The system diagram identifies the main components of a basic EA440 system. Only the main connections between the units are shown. Detailed interface capabilities and power cables are not shown. The basic EA440 Single beam hydrographic echo sounder consists of one transducer and one WBT.

  • Page 8: System Units

    The Operator Station may be a panel computer or a separate computer with a display. The computer is based on a commercial design, but the software and hardware has been specified by Kongsberg Maritime to suit the EA440 requirements. WBT description The WBT is provided to transmit acoustic energy through water. This transmission and reception are commonly referred to as a ping.

  • Page 9: Single-Beam Transducers

    EA440 Single-beam transducers The EA440 Single beam hydrographic echo sounder can be used with our efficient single-beam transducers. Kongsberg Maritime can provide a large range of efficient and accurate single-beam transducers for underwater mapping applications. A large number of operational frequencies is available. For more information about Kongsberg Maritime transducers, see our website.

  • Page 10: Scope Of Supply

    Basic items provided with a standard delivery, page 10 Basic items provided with a standard delivery To assemble a complete EA440 system, you will need a set of system units. The main units required are provided with the standard delivery.
  • Page 11 EA440 system. Operational software Operational software is provided on a suitable media. If the Operator Station is purchased from Kongsberg Maritime, the operational software is installed on the Operator Station, and ready for use. End user documentation End-user documentation is provided on paper and/or digital formats.

  • Page 12: Installation Requirements

    Power consumption Cables and wiring requirements Correct wiring is crucial for the operational performance of the EA440. All cables running between system cabinets located in different rooms and/or on different decks must be supported and protected along their entire lengths using conduits and/or cable trays.

  • Page 13: Compass Deviation Requirements

    EA440 Compass deviation requirements EA440 units that are installed on the bridge may have an effect on the compass. Once the installation is complete, the vessel must be swung with the EA440 in both operative and inoperative modes. The shipowner and captain are responsible for updating the compass deviation table accordingly with regard to the vessel’s national registry and corresponding maritime...
  • Page 14 The computers are thus not protected against viruses, malware or unintentional access from external users. Securing the EA440 system itself has no meaning unless there is a policy in place that secures all computers in the network. This policy must include physical access by trained and trusted users.

  • Page 15: Support Information

    EA440 Support information Should you need technical support for your EA440 you must contact a Kongsberg Maritime office. A list of all our offices is provided on our website. You can also contact our main support office in Norway. •...

  • Page 16: Preparations

    EA440 Installation manual Preparations Topics Installation summary, page 17 About installation drawings, page 18 Tools, equipment and consumables required for EA440 installation, page 18 Where to install the transducer, page 19 Acoustic noise, page 24 392616/B...

  • Page 17: Installation Summary

    Power up the EA440 for the first time, and set it to work. Note In order to power up of the EA440 in a safe and correct manner, the relevant procedures must be complied to! Connect the peripheral units.

  • Page 18: About Installation Drawings

    Tools, equipment and consumables required for EA440 installation In order to do the EA440 installation, all necessary tools and equipment for mechanical work, cabinet installation and electrical wiring must be available. It is not practical to provide a detailed list of all necessary tools and equipment. You must be equipped with a standard set of tools.

  • Page 19: Where To Install The Transducer

    Mount the transducer deep In order to achieve the best possible EA440 performance, mount the transducer as deep as possible under the vessel’s hull. There are several reasons for this recommendation.

  • Page 20: Avoid Protruding Objects Near The Transducer

    The effect of slamming can be reduced by mounting the transducer as deep as possible on the hull. Note Kongsberg Maritime AS takes no responsibility for any damages to the transducer, the cable or the mounting arrangement, caused by slamming. Avoid protruding objects near the transducer Objects protruding from the hull will generate turbulence and flow noise.

  • Page 21: Keep The Transducer Far Away From The Propellers

    When in operation, the noise and cavitation bubbles created by the thruster may make your EA440 Single beam hydrographic echo sounder useless, almost no matter where the transducer is installed. When the bow thrusters are not in operation, the tunnel creates turbulence.
  • Page 22 EA440 Installation manual Transducer Inclination angle Hull length at water line Maximum 1/3 of the hull length at water line (C) If the vessel hull has a bulbous bow, this may well be a good transducer location, but also in this case the flow pattern of the aerated water must be taken into consideration.
  • Page 23 Preparations Important The transducer must never be tilted backwards when the vessel is moving at normal speed. Do not place a transducer in the vicinity of protruding objects, and especially not close behind them. Make sure that the surface of the resulting installation is as smooth and streamlined as possible.

  • Page 24: Acoustic Noise

    EA440 Installation manual Acoustic noise Topics Contributing factors, page 24 Self noise, page 26 Ambient noise, page 28 Electrical self noise, page 28 Some means to reduce acoustic noise, page 29 Contributing factors Several factors are contributing to the performance of the hydroacoustic equipment used on board a vessel.
  • Page 25 Preparations is necessary to keep the noise level is as low as possible in order to obtain long range and dependable interpretation. The noise that contributes to the signal to noise ratio may be divided into the following types of noise: •...

  • Page 26: Self Noise

    EA440 Installation manual Self noise Any vessel equipped with a hydroacoustic system (for example echo sounder or sonar) will produce more or less self noise. There are many sources of such self noise. We will here go into some details in order to analyse the different sources of self noise on a vessel and how they may influence upon the noise level of the hydroacoustic instruments.
  • Page 27 Preparations caused by the propellers. Propeller cavitation is a severe source of noise. The cavitation starts when the water flows in the same direction as the propeller blades. This is where the propeller blades move downwards. In some cases a resonant phenomenon is set up in a hole near the hull. This sound will have a discrete frequency, while all other flow noise will have a wide frequency spectrum.

  • Page 28: Ambient Noise

    EA440 Installation manual Interference Interference from other hydroacoustic equipment on board the same vessel may be an annoying source of disturbance. Unless the same frequency is used for more than one piece of equipment only the transmitted pulse will contribute to the interference.

  • Page 29: Some Means To Reduce Acoustic Noise

    Some means to reduce acoustic noise Several factors are contributing to the performance of the hydroacoustic equipment used on board a vessel. Careful planning of the EA440 installation may reduce the acoustic noise. Unfortunately, it is impossible to simply provide a number of specific procedures to reduce the noise.
  • Page 30 • Make sure that all units are properly grounded, as this is important to avoid electrical noise. • Use shielded cables with correct grounding. • Separate EA440 cables from other cables with high voltages, large currents or transients. Place all high voltage power cables in metal conduits. 392616/B...

  • Page 31: Installing The Ea440 Hardware Units

    Installing the EA440 hardware units Installing the EA440 hardware units Topics Installing the WBT using the integrated brackets, page 32 Installing the WBT in a 19" cabinet, page 33 Installing a commercial computer, page 34 Mounting the WBT Cabinet, page 36...

  • Page 32: Installing The Wbt Using The Integrated Brackets

    Installing the WBT using the integrated brackets The EA440 WBT is normally positioned in a dedicated room in the vicinity of the transducer. The physical length of the cable limits the distance between the transducer and the WBT. The WBT can be installed vertically or horizontally using the integrated mounting brackets.

  • Page 33: Installing The Wbt In A 19" Cabinet

    Prerequisites It is assumed that the WBT Cabinet has already been installed. Context If your EA440 comprises more than one WBT, you can use the optional WBT Cabinet. This 19" cabinet holds maximum seven WBTs with power supplies, as well as an Ethernet switch and a power distribution panel.

  • Page 34: Installing A Commercial Computer

    Note Make sure that the chosen computer meets the EA440 requirements. The design and construction must allow for marine use, and the computer must be able to withstand the movements and vibrations normally experienced on a vessel. Verify that you have easy access to cables and connectors, and that the computer can be installed in a safe and secure way.
  • Page 35 Installing the EA440 hardware units Depending on its physical properties, install the computer inside a console, in a cabinet or 19” rack, or on a desk. Choose a position to fit the available cable lengths between the computer and the other units it connects to.

  • Page 36: Mounting The Wbt Cabinet

    The installation of the cabinet must be planned and prepared by the installation shipyard in close cooperation with the end user. Relevant installation drawings with mounting details must be provided by the shipyard. Verify that the location meets the environmental requirements defined for the EA440. 392616/B...
  • Page 37 Installing the EA440 hardware units Earth strap Bolt this shock absorber to the bulkhead. Secure the shock absorber assembly to the top of the cabinet using these two bolts. All cables will enter through the bottom and/or the top of the cabinet.

  • Page 38: Mounting The Drawers In The Wbt Cabinet

    EA440 Installation manual Note The use of "U" shaped profiles and bulkhead support bracket(s) is optional. Mount the "U" shaped profiles. Design, manufacture and mount the U-shaped steel profiles. Make sure that the profiles can withstand the full weight of the cabinet.
  • Page 39 Installing the EA440 hardware units Context We recommend that you mount all the empty drawers into the WBT Cabinet before you mount the WBT unit on each drawer. Mounting bolts for the WBT Mounting bracket for the power supply Holes for fastening and securing the cables...

  • Page 40: Designing, Manufacturing And Mounting The Steel Conduit

    EA440 Installation manual Designing, manufacturing and mounting the steel conduit A steel conduit is used to protect the transducer cable. The conduit serves two purposes. It will protect the cable, and shield it from electric noise. Depending on how the steel conduit is terminated over the transducer, it may also secure the watertight integrity of the vessel.
  • Page 41 If required, all documents provided by the shipyard for the physical installation of the EA440 must be approved by the vessel’s national registry and corresponding maritime authority and/or classification society. Such approval must be obtained before the installation can begin.

  • Page 42: Installing The Transducer(S)

    The installation of the transducer (or transducers) is a key task for successful use of the EA440 Single beam hydrographic echo sounder. Not only will you need to penetrate the vessel’s hull, you must also to select a physical location for maximum performance and minimum acoustic and electric noise.

  • Page 43: Installing The Transducer On A Blister Or Drop Keel

    Installing the EA440 hardware units Tighten the packing nut on the cable gland properly to avoid leaks. Mount the transducer. 10 Seal the top of the steel conduit to prevent water leaks. 11 Connect the transducer cable to the WBT.
  • Page 44 EA440 Installation manual Bolt with suitable diameter and length Washer Transducer cable Blister bottom plate Fill with suitable filling compound (putty) to reduce flow noise Procedure Lift the transducer up into is location, and align the holes on the transducer with the holes in the blister or drop keel.

  • Page 45: Installing The Transducer On A Steel Hull

    The force of the water when the hull falls down may push the transducer up, and may cause damage both to the transducer and to its mounting. Note Kongsberg Maritime AS takes no responsibility for any damages to the transducer, the cable or the mounting arrangement, caused by slamming. 392616/B...
  • Page 46 EA440 Installation manual Threaded rod with suitable diameter and length, welded to the bottom of the fairing Washer Transducer cable Hull Fill with suitable filling compound (putty) to reduce flow noise Procedure Lift the transducer up into is location, and align the holes on the transducer with the threaded rods welded to the fairing.

  • Page 47: Cable Layout And Interconnections

    Cable layout and interconnections Cable layout and interconnections Topics Cable plan, page 48 List of cables, page 49 Installing the EA440 cables, page 50 Cable drawings and specifications, page 57 392616/B...

  • Page 48: Cable Plan

    EA440 Installation manual Cable plan The cables are part of the delivery with the main units. Operator Station Ethernet switch Power supply Transducer 392616/B...

  • Page 49: List Of Cables

    An Ethernet switch is required if more than one WBT is used. A junction box is required if the transducer cable is longer than provided. List of cables A set of cables is required to connect the EA440 units to each other, and to the relevant power source(s). Cable...

  • Page 50: Installing The Ea440 Cables

    EA440 performance. Context The WBT used by the Kongsberg EA440 can be set up to work with maximum four -4- operational frequencies. This means that you can use four single frequency/single beam transducers or two dual frequency transducers.
  • Page 51 Cable layout and interconnections WBT – Standard : Transducer: Channel 1 - 2 : Transducer: Channel 3 - 4 WBT – High power : Transducer: Channel 1 - 2 Procedure Pull the transducer cable through the steel conduit. Make sure that an ample length of the transducer cable is available for maintenance and replacement.
  • Page 52 EA440 Installation manual Make sure you use the correct size cable gland according to the cable size. The cable glands are included in the delivery. Use a blind plug to cover the points not in use. Pull the transducer cable through the cable glands.
  • Page 53 Cable layout and interconnections 13 Connect the conductors in the transducer cable to the correct pins in the plugs, using the pin-out and the ship’s cable plan. Check the license information to see which transducer to install where. 14 Connect the plugs to P1 and P2. 15 Make sure the conductive gasket is still attached to the WBT.

  • Page 54: Connecting Power And Ground To The Wbt

    16 Fasten the panel. Connecting power and ground to the WBT The EA440 WBT is powered by a dedicated power supply connected to the AC mains, or from a suitable battery for DC operation. The unit must be properly grounded.

  • Page 55: Connecting The Wbt And The Operator Station

    An RS-232 serial line connection using the Request To Send (RTS) and Clear To Send (CTS) signals is common way to connect the EA440 to external devices for synchronisation purposes. The cable is connected to the serial line adapter on Operator Station.
  • Page 56 You must use an RS-232 interface for this purpose. Connect the serial cable from the Operator Station to the peripheral device. On the peripheral device, wire as described in the relevant documentation. Further requirements All serial interfaces must be defined in the EA440 software prior to use. 392616/B...

  • Page 57: Cable Drawings And Specifications

    Transducer, page 57 Auxiliary connector for synchronization, page 58 RS-232 used as synchronization trigger (input or output), page 59 Transducer For an EA440 system the WBT can handle up to four channels. Transducers Optional junction box WBT transceiver, connector P1...

  • Page 58: Auxiliary Connector For Synchronization

    The socket is made to fit a Conxall 7-pin ® shielded connector. The Mini-Con-X connections are made on pins 2, 3 and 5. The connector can be ordered from the manufacturer, or purchased from Kongsberg Maritime using order number 387563 • : Switchcraft Conxall Manufacturer •...

  • Page 59: Rs-232 Used As Synchronization Trigger (Input Or Output)

    RS-232 used as synchronization trigger (input or output) An RS-232 serial line connection using the Request To Send (RTS) and Clear To Send (CTS) signals is common way to connect the EA440 to external devices for synchronization purposes. Local connection...

  • Page 60: Drawing File

    EA440 Installation manual Drawing file Topics 388697 WBT outline dimensions, page 61 400930 WBT Cabinet outline dimensions, page 63 392616/B...

  • Page 61: 388697 Wbt Outline Dimensions

    Drawing file 388697 WBT outline dimensions 392616/B...
  • Page 62 EA440 Installation manual 392616/B...

  • Page 63: 400930 Wbt Cabinet Outline Dimensions

    Drawing file 400930 WBT Cabinet outline dimensions 392616/B...
  • Page 64 EA440 Installation manual 392616/B...
  • Page 65 Drawing file 392616/B...
  • Page 66 EA440 Installation manual 392616/B...

  • Page 67: Technical Specifications

    Technical specifications Technical specifications Topics Performance specifications, page 68 Interface specifications, page 69 Weight and outline dimensions, page 72 Power requirements, page 72 Environmental requirements, page 73 392616/B...

  • Page 68: Performance Specifications

    EA440 Installation manual Performance specifications These performance specifications summarize the main functional and operational characteristics of the EA440 Single beam hydrographic echo sounder. Pulse lengths and maximum resolution • : CW 32 - 512 μs, FM, Resolution: 0.3 cm 500 kHz •...

  • Page 69: Interface Specifications

    : English, French, Icelandic, Norwegian, Spanish, German Menu languages Interface specifications The EA440 will interface with peripheral systems and sensors using standard and/or proprietary datagram formats. Supported datagram formats for position information The EA440 supports the following datagram formats for position information.
  • Page 70 If it is offset by variation, it provides the true heading. Supported datagram formats for motion information The EA440 supports the following datagram formats from a motion sensor. • Kongsberg EM Attitude 3000 The EM Attitude 3000 is a proprietary datagram format created by Kongsberg Maritime for use with digital motion sensors.
  • Page 71 Technical specifications Simrad depth is a proprietary datagram format created by Kongsberg. The draft, frequency, sound velocity profile and transducer depth may be included. • Atlas Depth Atlas Depth is a proprietary datagram format created by Atlas Elektronik (http://www.atlas-elektronik.com) to provide the current depth from two channels.

  • Page 72: Weight And Outline Dimensions

    Power consumption The technical specifications are those valid for the computer that provided by Kongsberg Maritime as a part of the EA440 delivery. For specifications related to a locally purchased computer, refer to the documentation provided with the unit. 392616/B...

  • Page 73: Environmental Specifications

    Degree of protection The technical specifications are those valid for the computer that may be ordered from Kongsberg Maritime as a part of the EA440 delivery. For specifications related to a locally purchased computer, refer to the documentation provided with the unit.

  • Page 74: Equipment Handling

    EA440 Installation manual Equipment handling Topics Transporting Kongsberg Maritime equipment, page 75 Lifting units and transportation boxes, page 76 Inspection of units and transportation boxes after arrival, page 77 Specifications for storage prior to installation or use, page 78 Unpacking instructions, page 79...

  • Page 75: Transporting Kongsberg Maritime Equipment

    In the absence of other information, no other boxes must be stacked on top of it. Handle all boxes and units with care. Note Due to the nature of Kongsberg Maritime’s products, and the extensive use of delicate electronic parts, all units and boxes must be regarded and handled as fragile equipment.

  • Page 76: Lifting Units And Transportation Boxes

    EA440 Installation manual Lifting units and transportation boxes Some of the boxes used to hold equipment units may be heavy. Use caution when lifting. Prerequisites Units and boxes may be heavy. Make sure that you have the necessary equipment required for lifting heavy items. Persons using the lifting equipment must be skilled and have the relevant certificate(s).

  • Page 77: Inspection Of Units And Transportation Boxes After Arrival

    Equipment handling Note Due to the nature of Kongsberg Maritime’s products, and the extensive use of delicate electronic parts, all units and boxes must be regarded and handled as fragile equipment. Inspection of units and transportation boxes after arrival A visual inspection must be done immediately after the box(es) have arrived at their destination.

  • Page 78: Specifications For Storage Prior To Installation Or Use

    EA440 Installation manual Specifications for storage prior to installation or use When a system, a unit or a spare part has been delivered to the customer, it may be subject to long time storage prior to installation and use. General specifications During this storage period, certain specifications must be met.

  • Page 79: Unpacking Instructions

    Equipment handling Caution Units containing lithium or alkaline batteries must be handled separately and with care. Such units are marked accordingly. Do not attempt to recharge such batteries, open them, or dispose of them by incineration. Refer to the applicable product data sheets or battery handling procedures for further details.

  • Page 80: Unpacking Standard Parts And Units

    Describe the damage, and collect photographic evidence if possible. Return the inspection report to Kongsberg Maritime as soon as possible. Place the box on a stable work bench or on the floor with the top of the box facing upwards.

  • Page 81: Unpacking Mechanical Units

    Equipment handling Once the carton is open, carefully remove all loose packing and insulation material. Check for user manuals and other documents that may have been added to the carton during packing. Check also for special tools, door keys etc. Unpacking mechanical units Prior to installation or use, mechanical units must be unpacked from their transport boxes.

  • Page 82: Unpacking Transducers

    Describe the damage, and collect photographic evidence if possible. Return the inspection report to Kongsberg Maritime as soon as possible. Assuming all is well, open the bag and remove the unit. Take out and keep the documentation.
  • Page 83 Equipment handling Context Transducers may be supplied mounted to a hull unit (if any), or packed separately. Sonar heads and hydrophones are normally packed and shipped in separate boxes. Boxes are identified by the order number and the serial number of the unit inside. Note Once a transducer, sonar head or hydrophone is unpacked, make sure that the body and the cabling are not exposed to any mechanical stress.

  • Page 84: Specifications For Storage After Unpacking

    Do not break the seal to open a circuit board package before the board is to be used. If the board package is returned to Kongsberg Maritime with the seal broken, we will assumed that the unit has been used, and then you will be billed accordingly.
  • Page 85 Equipment handling Note Unless otherwise specified, transducers and hydrophones must not be stored in temperatures below −10°C and above +50°C. 392616/B...
  • Page 86 EA440 Installation manual Index 19" Transceiver Cabinet provided with the delivery......10 mounting ..........36 block mounting the drawers ........38 diagram............. 7 book purpose ............. 5 target audience ..........5 bow thrusters about acoustic noise..........21 ambient noise..........28 transducer installation ........
  • Page 87 Index synchronization using Request To Send (RTS) HOS ............72 and Clear To Send (CTS)......55 technical specifications........72 conduit transceiver ..........72 designing, manufacturing and mounting the WBT Cabinet..........63 steel conduit..........41 Wide Band Transceiver (WBT) ....61, 72 conduit (steel) documents transducer cables.........
  • Page 88 WBT Cabinet ....38 mount the transducer ....... 43, 45 lifting mount the WBT Cabinet ........ 36 transportation boxes ........76 transport Kongsberg Maritime equipment.... 75 unit ............76 unpack a hydrophone........82 list unpack a mechanical unit ....... 81 system interconnection cables......
  • Page 89 ......43, 45 Wide Band Transceiver (WBT) ....12, 73 mounting the WBT Cabinet ......36 outline dimensions transporting Kongsberg Maritime equipment ..75 HOS ............72 unpacking a hydrophone ........ 82 technical specifications........72 unpacking a mechanical unit ......81 transceiver ..........
  • Page 90 EA440 Installation manual visual inspection of units and transportation transceiver ..........72 boxes after arrival ........77 Wide Band Transceiver (WBT) ......72 procedures slamming creating mounting procedures......18 transducer ..........20 unpacking ..........79 sonar head processed data unpacking ..........82 formats ............
  • Page 91 Index supply power ..........12 transducer ..........43, 45 trademarks registered........... 5 transceiver connecting AC mains........54 visual inspection connecting ground ........54 transportation boxes ........77 connecting the transducer cable......57 units............77 connecting transducer ........50 description ..........8 environmental requirements......
  • Page 92 ©2018 Kongsberg Maritime...

Table of Contents