Towfish cable

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Index Recent Topics Search. Welcome, Guest. Username: Password: Remember me. Forgot your password? Forgot your username? Create an account. Lowrance and Humminbird Towfish extension cables. Lowrance and Humminbird Towfish extension cables 1 year 11 months ago Hi, I thought there might be some experienced people here who could help with a problem. It's not strictly to do with Reefmaster although I use Reefmaster to process the data. I was wondering if anyone knew the specifications of the transducer cables used for the Lowrance LSS2 sidescan and the Humminbird structure scan units?

I would like to have the transducers on towfish up to 50m from the head unit. Are there people on this forum who have extended the cables and what were the best ways you found to do this? Did you just use their commercial extensions and then waterproofed the connectors or did you splice third party cable?

Any help would be much appreciated. Cheers Dave. The administrator has disabled public write access. Hello Dave, I am now also in the process of making towfish - actually it's almost done and I've been looking around for cable extension solution.Page of Go.

Page 87 - Config.

Research vessel BOLD Towing Klein Sonar

Page 88 - Config. Keel Weight, Page 89 - Config. Page 90 - Config. Page 91 - Config. Page 92 - Config. Page 93 - Config. Page 94 Page 95 - Config. Keel Wt. Page 96 - Config. Page 98 Page 99 Page Page - Config. Page - Config.

Marine Sonic Technology

Page Page - Config. Keel Weight, A Quick Links. Download this manual. Table of Contents. Chapters Table Of Contents 13 Xviii Page 2 The information, figures, and specifications in this manual are proprietary and are issued in strict confidence on condition that they not be copied, reprinted, or disclosed to a third party, either wholly or in part, without the prior, written consent of EdgeTech. Any reproduction of EdgeTech supplied software or file sharing is strictly prohibited.

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Welcome, Guest. Please login or register. Solix Towfish. Helix G3 and towfish. DIY ? Transducer for towfish - depth rating? Dissecting the LSS Buy shallow-water sidescan sonar and magnetometer systems.

Super long array. Garmin transducer for SI. Piezos for Sidescan Array. Broken transducer cable gland. The LowBird-2 system. Side scan is opperational. Extending transducer cable. Hollow rope. Hey Rickard New toys to play with. My DIY Fish.Hot Threads. Featured Threads. Log in Register. Search titles only. Search Advanced search…. Log in. Contact us. Close Menu. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.

Forums Engineering Mechanical Engineering. Catenary shape of a towed underwater cable.

towfish cable

Thread starter xtamx Start date Jul 23, Hello, I'm designing a towed underwater vehicle towfish and I am having trouble with determining cable tension at the length of the cable at given depths and speeds. Its really just the effect of the cable on the whole system and the eventual steady state shape it will take. I've attached a diagram of the forces for reference. Does anyone know of any simple methods for estimating this? At this point the project is very preliminary and I would not need any detailed simulations or anything.

Just the steady state shape. Catenary Towfish Diagram. Related Mechanical Engineering News on Phys. Insights Author. Gold Member. Even in steady-state, your cable is not under those conditions.

All of the literature that I have looked at for towfish designs have used catenary descriptions of the cables. I've done a bit of mooring analysis in school but the equations are a bit different since in that case the cable weight per length is much higher than the cable drag per length so the drag is neglected. Drag is dominant in my case though as the diameter is much smaller. SteamKing Staff Emeritus. Science Advisor. Homework Helper. Last edited by a moderator: May 6, That looks pretty good.

It's a bit involved for a project that may or may not go ahead. Definitely useful if it does though, thanks. I'm really hoping to find a simple quick calculation of cable length and tension at the top and bottom but the more I look into it the less I think its possible.

Just ballpark estimates would do. Your diagram has the curve of the cable going the wrong way. The attachment to the vehicle should be nearly horizontal and curve upwards to the support ship.Side scan sonar is one of the most effective tools for underwater exploration because it can search a large area quickly and produce a detailed picture of anything on the bottom, regardless of water clarity.

towfish cable

When looking at a side scan image it appears as if the water has been removed and the operator is getting an unobstructed view of the ocean floor, lake bottom, or river bed. High resolution images are sent from the towfish to a topside computer included with the system for display and storage.

The Choose between 10 different scan ranges and 8 color schemes to display images. Connect a GPS and position coordinates are automatically captured with the side scan data. Point the mouse on a target and the GPS position coordinates for the target are displayed on the screen. The dual frequency side scan is a combination of any two frequencies i. There are pros and cons to each frequency as explained below.

Low frequency SSSK units have excellent long range up to m, 1,m swath and produce a very good image when scanning with a 50 meter to meter range setting. When operating a low frequency unit in the short ranges below 50 m images can be seen but lack the sharpness as seen in the longer ranges.

In addition, low frequency units do not see soft targets very well old wood shipwrecks, drowning victims, etc. The SSSK is an ideal tool for large scale general search applications such as searching for shipwrecks, locating pipelines, rocks and reef structures, large propellers, planes, cars, etc. The range settings in meters are: 10, 25, 50, 75,and meters each side. The high frequency SSSK side scan produces excellent resolution images when scanning with a 10 meter to meter range setting.

The 5-meter range produce good images, but lack the sharpness of the higher ranges. The SSSK is ideal for law enforcement and dive rescue operations or any operation that requires a high resolution image.

Catenary shape of a towed underwater cable

It produces high resolution images at ranges up to 75m m swath. This high frequency sonar will show everything that the low frequency sonars can see, plus small and soft targets like a drowning victim, clothing, etc. The K side scan is also popular with wreck hunters and archaeologists searching for old wood vessels that may be broken up or decomposing.JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser. Online pricing is not permitted for this product.

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towfish cable

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Magnetometer Tow Depth Calculator

Learn more about shipping times, methods, costs, and carriers. We keep you informed. Shortly after you place your order, you will receive an Order Acknowledgement email to confirm your order details, including shipping and a delivery estimate. Once your order has been prepared for shipment and ships, you will receive a Shipment Notification email with carrier and tracking information. The 'Ships' timeframe is an estimate of when the item will ship from our warehouse. All items will ship at one time unless you specifically request partial shipment.

In which case, the items on your order will ship as they become available. The 'Delivers' timeframe is an estimate of when the item will be delivered to your shipping address after it ships. The estimated delivery time depends on the shipping method you choose during checkout.The CM2's telemetry is so versatile that it can handle coaxial or twisted pair cables from 50m up to m long.

CM2 tow cables carry both power and signal on a single pair of conductors enabling both coaxial or twisted pair cables to be used with no user modifications required when switching cable types. C-MAX can supply a range of winches and cables from 50m kevlar armoured coax suitable for shallow water surveys to m of steel armoured twisted pair on an electric winch. The CM2 portable winch and 4.

The CM2 portable winch with m cable capacity can be hand carried to the survey vessel and features:. It can be assumed, as a "rule of thumb", that the length of tow cable required for a sidescan sonar towfish is about 3 times the depth of the towfish.

Marine Sonic Technology

This is because the drag on the tow cable causes it to lie at an angle astern. A normal towing altitude for the towfish is between 5 and 20m metres above the seabed. CX cables are available in 50m and m lengths, plus longer options to special order. For search depths covering from very shallow down to m the 4.

To reach deeper tow depths this LOG5 cable can be used on a larger winch. If the required depths increase even further, a heavier armoured tow cable with a diameter of 8.

Only 47kg with m of cable All stainless steel construction Maintenance free, fully sealed low-noise sliprings Built in overload clutch Soft-start feature gives smooth cable handling. PVC protective cover. Important information about towcable selection It can be assumed, as a "rule of thumb", that the length of tow cable required for a sidescan sonar towfish is about 3 times the depth of the towfish.


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