Towing device adapted to stabilise a towed body

An apparatus for towing behind an underwater vehicle has a body (1) and a yoke (3) pivotally connected to the body at a pivot point (5) and having a tether point (4, Fig 2) remote from the pivot point (5) by which the apparatus us towed. The yoke (3) has wings (8) which generate a resultant force on the body (1) when the apparatus is towed. By varying the orientation of the yoke (3) relative to the body (1), the magnitude of the resultant force may be varied. The resultant force tends to reduce the displacement of the tether (4) relative to the pivot point (5) in at least one plane, thereby generating a force to counter the buoyancy of the apparatus, and so stabilise the apparatus when it is being towed.