Image
Terschelling's towfish
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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