The current invention, in some embodiments thereof, relates to a tow unit 1 and image acquisition apparatus (or ‘platform’, or ‘the platform’) 2. The tow unit comprises of an attachment mechanism 10, provided for the attachment of the cabling 3. The cabling 3 comprises of a tow ball 4, typically immersed in water in the water body 5. Further in the same figure is an image acquisition apparatus 2 with an attachment means or mechanism 20, provided for the attachment of the cabling 3 and by extension, the tow unit 1.