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Towfish Prototype #1 Latvian
posted by Walter
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June 30, 2014, 09:53:10 AM |
1082 |
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4.94 (1 vote) |
First test results are very good!  Tube length 110cm Wings- 2mm Plastic Tube diameter 50mm (Metal 1.5mm tick) Weight > 10kg Towfish metal nose 20cm/10+10cm (inside) Original extension cables Humminbird Transom Transducer XHS 9 HDSI 180 T 710201-1 |
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towfish N° 3
posted by abraquelebout
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June 24, 2014, 02:20:06 PM |
918 |
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60 m cable, 16 kg, 1,25 m and 10 cm diameter
fins are surf fins
LSS2 ducer and HDSI
455/800/200/83 in hdsi
455/800 and di in LSS2
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My second towfish.
posted by Kimi
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January 02, 2014, 02:14:37 PM |
849 |
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This one is built from a plastic wastewaterpipe. Nosecone is aluminium, and filled with lead. Th tranceducer is a thruhull model. Fins are made of polycarbonate.
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DIY towfish by Mappe
posted by Mappe
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October 13, 2012, 03:11:54 AM |
3489 |
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A picture of the Towfish.
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DIY towfish by Mappe
posted by Mappe
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October 13, 2012, 03:10:18 AM |
3462 |
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My first home made towfish. Because im a sheet metal man, the only opinion was to build it from stainless steel. It weight 5,1 kilos. Cable is CAT6 and it goes inisde a rope.
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second towfish
posted by abraquelebout
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September 20, 2011, 07:50:41 AM |
1325 |
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60 m cable, working well, a good towfish, hd ducer, 455 / 800 khz
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Kimis towfish
posted by Kimi
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September 06, 2011, 12:17:46 PM |
1182 |
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This is my first towfish project. Anyone can build one like this in a few hours. Its all made in aluminum.
A led weight 2,5 kg, is in the front. I have only tested it whit standard cabellenght. It seem to work well.
I made it whit a V-tail, because its easier to build, and it will not get stuck in the seabottom as easy as a fourblade tail. At least I hope so?
I gave it the name "Vesihiisi" (Seatrull), after the famous Finnish ww2 submarine. A seatrull was also a fictive creature we use to scare the kids whit, so they would stay away from shoreline and not get drowned.
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Towfish No-2
posted by Sea-Rover
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September 01, 2011, 04:50:37 AM |
994 |
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Longer Array = 2x 262 kHz HB-Transducer
next time: Transducer tilt 10° - 35°
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DIY-Towfish No-2
posted by Sea-Rover
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September 01, 2011, 04:31:08 AM |
954 |
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Towfish only for test: PVC, Alu, longer Array 23cm (ex HB-Transducer 262 kHz)
waterproof connector, weight in air 8 kg
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DIY-Towfish No-1
posted by Sea-Rover
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August 19, 2011, 08:11:17 PM |
918 |
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Waterproof Connectors
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DIY-Towfish No-1
posted by Sea-Rover
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August 19, 2011, 08:05:50 PM |
1056 |
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Material: PVC, Inox, Alu, left and right side dismantles singelducer with 10° down, HB-Transducer 455/800, waterproof connector, weight in air 12 kg
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IMG 2872
posted by angel
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April 20, 2011, 07:44:40 PM |
1033 |
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Made this out of PVC. Plex fins. I cut the body for the fins to be disassembled. I balance the fish with lead on each end. If anyone wants more info I will have to look at old notes.
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HPIM0989
posted by Roddy
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April 07, 2011, 11:24:28 PM |
1110 |
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TF3 aft
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HPIM0988
posted by Roddy
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April 07, 2011, 11:23:42 PM |
1131 |
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TF3 fwd
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HPIM0987
posted by Roddy
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April 07, 2011, 11:22:46 PM |
994 |
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TF3 xducer mount
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HPIM0985
posted by Roddy
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April 07, 2011, 11:22:03 PM |
993 |
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Tow Fish #3
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Roddy's Tow Fish #2
posted by Roddy
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March 29, 2011, 09:58:42 PM |
1050 |
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Roddy's Tow Fish
posted by Roddy
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March 29, 2011, 09:53:00 PM |
986 |
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Terschelling's towfish
posted by Terschelling
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March 10, 2011, 05:50:24 PM |
1194 |
1 |
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Some figures:
Lenght 1.50m
Tail fin in X configuration , made out of 2mm stainless steel plate 14 x 45 cm
Pipe 32mm diam. wallthickness 1mm, transducer simply connected with bolt & nut.
2 divebelt weights of 2kg at the front.
towing point: shackle which is connected tothe pipe by stainless steel hose clips, same used for connecting weights and for securing of fins.
total weight 8.5 kg , easy to handle with 4mm polyester wire and without gloves.
Objective: a tow fish capable to be used with relative high boatspeeds to make "quick" scans of large area's. For this I need a fish with some weight / less drag or a depressor wing.
A "big" wreck will be noticed, afterwards these positions will be run with reduced speed and range to get detailed images.
Before modification she was equiped with plastic fins (to weak > deformation and un-balance and much less weight > towing point more to the forward as on previous picture)
Now the towing point is almost in centre (1 a 2 cm before centre of weight), the fins will take care for a stable course.
Regards,
Frank
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Rickard's towfish
posted by Rickard
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March 03, 2011, 03:19:55 PM |
1155 |
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This is my experimental fish in it's present condition. Not beatiful, but works well. The body is a 3,5 feet, 1" steel pipe. Weight is now 10 kg which is needed for keeping the fish at 30 m depth at 3 Knots. I have attached lead at the nose, inside the nose and behind the transducer. The towing cable is from PVC coated steel wire. The cable is attached at the balance point with a turnbuckle to prevent from roll. Fifty meter with ethernet cable is spliced on the transducer cable.
Rickard
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Humminbird Transducer Fish v1
posted by plastikboot
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June 18, 2010, 02:29:18 PM |
1389 |
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The first attempt to build a fish for the transducer. Weight in air: 5,2 kg. I use http://www.fischerconnectors.de/. The cable is from an ocean reef diver telephone and can be used without an extra cable. |
