Deflector for marine data acquisition system

A marine data acquisition system, comprising:

• towing cables configured to be deployed according to a predetermined geometry behind a towing vessel and configured to connect to a streamer or a source;
• and
• at least one deflector attached to one of the towing cables, the at least one deflector having a wing body including a first part joined to a second part to form a swept-back-wing shape, the first part and the second part being substantially coplanar,
• wherein
• a first straight line stretching along at least a portion of a front edge of the first part makes a first angle with a second straight line stretching along at least a portion of a front edge of the second part, and
• a third straight line stretching along at least a portion of a trailing edge of the first part makes a second angle with a fourth straight line stretching along at least a portion of a trailing edge of the second part, the first angle and the second angle being non-zero angles.

A method of controlling position of one or more components of a marine data acquisition system, the method comprising:

• attaching a deflector to a towing cable configured to be towed behind a vessel, the deflector having a wing body including a first part joined to a second part to form a swept-back-wing shape, the first part and the second part being substantially coplanar;
• and
• deploying the towing cable behind the vessel according to a predetermined marine data acquisition geometry,
• wherein
• a first straight line stretching along at least a portion of a front edge of the first part makes a first angle with a second straight line stretching along at least a portion of a front edge of the second part, and
• a third straight line stretching along at least a portion of a trailing edge of the first part makes a second angle with a fourth straight line stretching along at least a portion of a trailing edge of the second part, the first angle and the second angle being non-zero angles.